Happy National Grammar Day!  Here’s a post from The Write Life on the Oxford comma debate. I adhere to this rule in my own writing and in the writings of those I edit. The reasons for using it are explained below.

This settles the Oxford comma debate! Except…it goes against AP style. Here’s an overview of how the serial comma works and why it’s important for clarity.

Source: Take That, AP Style! Court of Law Rules the Oxford Comma Necessary