The following are standard references for the AP Stylebook and for material not covered by the Stylebook.


First reference for spelling, style, usage and foreign geographic names:
Webster's New World College Dictionary, Fifth Edition, Houghton Mifflin Harcourt, Boston and New York, 2016.
Other references for spelling, style, usage and foreign geographic names:
The American Heritage Dictionary of the English Language, Fifth Edition, Houghton Mifflin Harcourt, Boston and New York, 2011.
Concise Oxford English Dictionary, Twelfth Edition, Oxford University Press, Oxford, 2011.
Webster's Third New International Dictionary of the English Language, unabridged, Merriam-Webster, Springfield, Massachusetts, 1993.


AP Stylebook and Webster’s New World Online integrates about 185,000 descriptions from the Stylebook's primary dictionary, Webster's New World College Dictionary, into a single web-based resource with AP Stylebook Online.