Bausum, A., & Dickerson, J. (2021). Our country's presidents: A complete encyclopedia of the U.S. presidency : featuring election 2020 (2020 edition.). National Geographic.
Цитирование в стиле Чикаго (17-е изд.)Bausum, Ann, и 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.
Цитирование MLA (8-е изд.)Bausum, Ann, и John Dickerson. Our Country's Presidents: A Complete Encyclopedia of the U.S. Presidency : Featuring Election 2020. 2020 edition. National Geographic, 2021.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.