Davis, K. C. (2012). Don't know much about the American presidents: Everything you need to know about the most powerful office on earth and the men who have occupied it. Hyperion.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Davis, Kenneth C. Don't Know Much About the American Presidents: Everything You Need to Know About the Most Powerful Office on Earth and the Men Who Have Occupied It. New York: Hyperion, 2012.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Davis, Kenneth C. Don't Know Much About the American Presidents: Everything You Need to Know About the Most Powerful Office on Earth and the Men Who Have Occupied It. Hyperion, 2012.
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