How do I style book titles in a block of italicized text?

Question

Book titles, among others, are commonly written in italics.

She had read this quote in Pride and Prejudice.

But what should I do if a title appears in a block of text that is already italicized, such as a character's thoughts?

Do I reverse the italics?

I've read this quote in Pride and Prejudice, she thought.

Do I use quotation marks, instead?

I've read this quote in "Pride and Prejudice," she thought.

Or do I use another approach altogether?

Answer 1

Reverse the italics to roman as you've done in the first example.