APA (7th ed.) Citation

U.S. Citizenship and Immigration Services. (2006). Sample U.S. history and government questions that may be asked during the naturalization exam. U.S. Citizenship and Immigration Services.

Chicago Style (17th ed.) Citation

U.S. Citizenship and Immigration Services. Sample U.S. History and Government Questions That May Be Asked During the Naturalization Exam. [Washington, D.C.]: U.S. Citizenship and Immigration Services, 2006.

MLA (9th ed.) Citation

U.S. Citizenship and Immigration Services. Sample U.S. History and Government Questions That May Be Asked During the Naturalization Exam. U.S. Citizenship and Immigration Services, 2006.