You are actually asking two different questions.

On the punctuation of the quotation, per The Chicago Manual of Style (13.15):

Many writers mistakenly use a comma to introduce any direct quotation, regardless of its relationship to the surrounding text. But when a quotation introduced midsentence forms a syntactical part of the surrounding sentence, no comma or other mark of punctuation is needed to introduce it, though punctuation may be required for other reasons.

 

Donovan made a slight bow and said he was “very glad.”

 

One of the protesters scrawled “Long live opera!” in huge red letters.

 

According to one critic, Copland’s style could be called “American urban pastoral, with a touch of jazz and more than a hint of Stravinsky.”

 

She said she would “prefer not to comment.”

So, no commas needed.

Your citation style will also depend on the style guide that you're using. Since I started with Chicago, I'll continue with it.

Per Chicago (15.23):

When a specific page, section, equation, or other division of the work is cited, it follows the date, preceded by a comma. . . .

 

(Piaget 1980, 74)

So, your in-text citation would actually be:

(Nash 2002, 46)

However, Chicago (15.26) says something else interesting in your particular case—which is also relevant to the quotation marks and punctuation:

Although a source citation normally follows a direct quotation, it may precede the quotation—especially if such a placement allows the date to appear with the author’s name.

 

As Edward Tufte points out, “A graphical element may carry data information and also perform a design function usually left to non-data-ink” (2001, 139).

 

or

 

As Edward Tufte (2001, 139) points out, “A graphical element may carry data information and also perform a design function usually left to non-data-ink.”

Based on all of that, your sentence could be presented as:

Nash (2002, 46) argued that “if the full value of Bourdieu’s method is to be achieved, it will be through the close investigation of definite habitus, as states of mind or effective dispositions.”

However, if you do put the reference (either fully or partially) at the end of the quotation, the terminal period will come after the reference.

You are actually asking two different questions.

On the punctuation of the quotation, per The Chicago Manual of Style (13.15):

Many writers mistakenly use a comma to introduce any direct quotation, regardless of its relationship to the surrounding text. But when a quotation introduced midsentence forms a syntactical part of the surrounding sentence, no comma or other mark of punctuation is needed to introduce it, though punctuation may be required for other reasons.

Donovan made a slight bow and said he was “very glad.”

One of the protesters scrawled “Long live opera!” in huge red letters.

According to one critic, Copland’s style could be called “American urban pastoral, with a touch of jazz and more than a hint of Stravinsky.”

She said she would “prefer not to comment.”

So, no commas needed.

Your citation style will also depend on the style guide that you're using. Since I started with Chicago, I'll continue with it.

Per Chicago (15.23):

When a specific page, section, equation, or other division of the work is cited, it follows the date, preceded by a comma. . . .

(Piaget 1980, 74)

So, your in-text citation would actually be:

(Nash 2002, 46)

However, Chicago (15.26) says something else interesting in your particular case—which is also relevant to the quotation marks and punctuation:

Although a source citation normally follows a direct quotation, it may precede the quotation—especially if such a placement allows the date to appear with the author’s name.

As Edward Tufte points out, “A graphical element may carry data information and also perform a design function usually left to non-data-ink” (2001, 139).

or

As Edward Tufte (2001, 139) points out, “A graphical element may carry data information and also perform a design function usually left to non-data-ink.”

Based on all of that, your sentence could be presented as:

Nash (2002, 46) argued that “if the full value of Bourdieu’s method is to be achieved, it will be through the close investigation of definite habitus, as states of mind or effective dispositions.”

However, if you do put the reference (either fully or partially) at the end of the quotation, the terminal period will come after the reference.

You are actually asking two different questions.

On the punctuation of the quotation, per The Chicago Manual of Style (13.15):

Many writers mistakenly use a comma to introduce any direct quotation, regardless of its relationship to the surrounding text. But when a quotation introduced midsentence forms a syntactical part of the surrounding sentence, no comma or other mark of punctuation is needed to introduce it, though punctuation may be required for other reasons.

Donovan made a slight bow and said he was “very glad.”

One of the protesters scrawled “Long live opera!” in huge red letters.

According to one critic, Copland’s style could be called “American urban pastoral, with a touch of jazz and more than a hint of Stravinsky.”

She said she would “prefer not to comment.”

So, no commas needed.

Your citation style will also depend on the style guide that you're using. Since I started with Chicago, I'll continue with it.

Per Chicago (15.23):

When a specific page, section, equation, or other division of the work is cited, it follows the date, preceded by a comma. . . .

(Piaget 1980, 74)

So, your in-text citation would actually be:

(Nash 2002, 46)

However, Chicago (15.26) says something else interesting in your particular case—which is also relevant to the quotation marks and punctuation:

Although a source citation normally follows a direct quotation, it may precede the quotation—especially if such a placement allows the date to appear with the author’s name.

As Edward Tufte points out, “A graphical element may carry data information and also perform a design function usually left to non-data-ink” (2001, 139).

or

As Edward Tufte (2001, 139) points out, “A graphical element may carry data information and also perform a design function usually left to non-data-ink.”

Based on all of that, your sentence could be presented as:

Nash (2002, 46) argued that “if the full value of Bourdieu’s method is to be achieved, it will be through the close investigation of definite habitus, as states of mind or effective dispositions.”

You are actually asking two different questions.

On the punctuation of the quotation, per The Chicago Manual of Style (13.15):

Many writers mistakenly use a comma to introduce any direct quotation, regardless of its relationship to the surrounding text. But when a quotation introduced midsentence forms a syntactical part of the surrounding sentence, no comma or other mark of punctuation is needed to introduce it, though punctuation may be required for other reasons.

Donovan made a slight bow and said he was “very glad.”

One of the protesters scrawled “Long live opera!” in huge red letters.

According to one critic, Copland’s style could be called “American urban pastoral, with a touch of jazz and more than a hint of Stravinsky.”

She said she would “prefer not to comment.”

So, no commas needed.

Your citation style will also depend on the style guide that you're using. Since I started with Chicago, I'll continue with it.

Per Chicago (15.23):

When a specific page, section, equation, or other division of the work is cited, it follows the date, preceded by a comma. . . .

(Piaget 1980, 74)

So, your in-text citation would actually be:

(Nash 2002, 46)

However, Chicago (15.26) says something else interesting in your particular case—which is also relevant to the quotation marks and punctuation:

Although a source citation normally follows a direct quotation, it may precede the quotation—especially if such a placement allows the date to appear with the author’s name.

As Edward Tufte points out, “A graphical element may carry data information and also perform a design function usually left to non-data-ink” (2001, 139).

or

As Edward Tufte (2001, 139) points out, “A graphical element may carry data information and also perform a design function usually left to non-data-ink.”

Based on all of that, your sentence could be presented as:

Nash (2002, 46) argued that “if the full value of Bourdieu’s method is to be achieved, it will be through the close investigation of definite habitus, as states of mind or effective dispositions.”

However, if you do put the reference (either fully or partially) at the end of the quotation, the terminal period will come after the reference.