APA (7th ed.) Citation

(2011). U.S. naturalizations. Homeland Security, Office of Immigration Statistics, Policy Directorate.

Chicago Style (17th ed.) Citation

U.S. Naturalizations. [Washington, D.C.]: Homeland Security, Office of Immigration Statistics, Policy Directorate, 2011.

MLA (9th ed.) Citation

U.S. Naturalizations. Homeland Security, Office of Immigration Statistics, Policy Directorate, 2011.