APA引文

Bausum, A., & Dickerson, J. (2021). Our country's presidents: A complete encyclopedia of the U.S. presidency : featuring election 2020 (2020 edition.). National Geographic.

Chicago Style (17th ed.) Citation

Bausum, Ann, and John Dickerson. Our Country's Presidents: A Complete Encyclopedia of the U.S. Presidency : Featuring Election 2020. 2020 edition. Washington, D.C.: National Geographic, 2021.

MLA引文

Bausum, Ann, and John Dickerson. Our Country's Presidents: A Complete Encyclopedia of the U.S. Presidency : Featuring Election 2020. 2020 edition. National Geographic, 2021.

警告：這些引文格式不一定是100％准確.