Punctuation

Punctuation

Use a single space after a period.

Do not use commas before a conjunction in a simple series. Example: In art class, they learned that red, yellow and blue are primary colors. His brothers are Tom, Joe, Frank and Pete. However, a comma should be used before the terminal conjunction in a complex series, if part of that series also contains a conjunction. Example: Purdue University's English Department offers doctoral majors in Literature, Second Language Studies, English Language and Linguistics, and Rhetoric and Composition.

Commas and periods go within quotation marks. Example: “I did nothing wrong,” he said. She said, “Let’s go to the Purdue game.”