APA (7th ed.) Citation

Sauer, P. (2000). The complete idiot's guide to the American presidents. Alpha Books.

Chicago Style (17th ed.) Citation

Sauer, Patrick. The Complete Idiot's Guide to the American Presidents. Indianapolis, Ind.: Alpha Books, 2000.

MLA (9th ed.) Citation

Sauer, Patrick. The Complete Idiot's Guide to the American Presidents. Alpha Books, 2000.