Bausum, A. (2013). Our country's Presidents: All you need to know about the presidents, from George Washington to Barack Obama (4th library edition.). National Geographic Society.
Cytowanie według stylu Chicago (wyd. 17)Bausum, Ann. Our Country's Presidents: All You Need to Know About the Presidents, from George Washington to Barack Obama. 4th library edition. Washington, D.C: National Geographic Society, 2013.
Cytowanie według stylu MLA (wyd. 9)Bausum, Ann. Our Country's Presidents: All You Need to Know About the Presidents, from George Washington to Barack Obama. 4th library edition. National Geographic Society, 2013.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..