"Chicago Style"

... and, again, we're not talking about pizza!

Many book publishers require authors to conform to The Chicago Manual of Style.

That site is comprehensive, but, alas, it requires membership.

"Introductory offer: $25.00 for your first year. The Chicago Manual of Style Online is available to individuals for a prepaid annual subscription of $30.00. If you subscribe before midnight CDT on September 30, 2007, you will receive your first year at the introductory rate."

There is, however, a 30-day free trial available.

I almost signed up simply to learn the when, where, why, and how of the serial comma.