APA (7th ed.) Citation

Domblewski, C. (2004). America enters World War I. Nat. Geographic Soc.

Chicago Style (17th ed.) Citation

Domblewski, Carol. America Enters World War I. Washington, DC: Nat. Geographic Soc, 2004.

MLA (9th ed.) Citation

Domblewski, Carol. America Enters World War I. Nat. Geographic Soc, 2004.