This question already has an answer here:

It's about using the right punctuation when abbreviation is used at the end of sentence. It has been asked here when the sentence is a question: How to deal with abbreviations at the end of a question?.

What about sentences like the following:

The opinions of this articles are those of the author(s),
and do not necessarily reflect the views of Google Inc..

Two dots or one dot?

marked as duplicate by RegDwigнt Sep 23 '13 at 20:07

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.


Common practice is to use only one period at the end of a sentence when an abbreviation would use a period. For other punctuation, such as a comma or semicolon, both the abbreviation's period and the other punctuation mark would typically be used. The issue might often be avoided by expanding the abbreviation.

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