Janis Bell Talks about Commas: Separating Items in a Series

(a) "I bought bread, fish, eggs, and cheese."
(b) "I bought bread, fish, eggs and cheese."

Which one is correct? Janis Bell talks about the correct usage of commas to separate items in a series. (From workshop presented at The Booksmith, Haight Street, San Francisco)

Janis Bell is the author of Clean, Well-lighted Sentences: A Guide to Avoiding the Most Common Errors in Grammar and Punctuation (W.W. Norton & Co., 2008)…more