APA-referens (7:e uppl.)

Matuz, R., Harris, B., & Ross, L. (2009). The presidents fact book: The achievements, campaigns, events, triumphs, tragedies, and legacies of every president from George Washington to Barack Obama. Black Dog & Leventhal Publishers.

Chicago-referens (17:e uppl.)

Matuz, Roger, Bill Harris, och Laura Ross. The Presidents Fact Book: The Achievements, Campaigns, Events, Triumphs, Tragedies, and Legacies of Every President from George Washington to Barack Obama. New York: Black Dog & Leventhal Publishers, 2009.

MLA-referens (9:e uppl.)

Matuz, Roger, et al. The Presidents Fact Book: The Achievements, Campaigns, Events, Triumphs, Tragedies, and Legacies of Every President from George Washington to Barack Obama. Black Dog & Leventhal Publishers, 2009.