National Constitution Center (U.S.) & U.S. Citizenship and Immigration Services. (2010). Civics and citizenship multimedia presentation: A promise of freedom : an introduction to U.S. history and civics for immigrants : becoming a U.S. citizen : an overview of the naturalization process (Rev. 04/10.). U.S. Dept. of Homeland Security, U.S. Citizenship and Immigration Services : For sale by the Supt. of Docs., U.S. G.P.O..
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)National Constitution Center (U.S.) và U.S. Citizenship and Immigration Services. Civics and Citizenship Multimedia Presentation: A Promise of Freedom : An Introduction to U.S. History and Civics for Immigrants : Becoming a U.S. Citizen : An Overview of the Naturalization Process. Rev. 04/10. [Washington D.C.]: U.S. Dept. of Homeland Security, U.S. Citizenship and Immigration Services : For sale by the Supt. of Docs., U.S. G.P.O., 2010.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)National Constitution Center (U.S.) và U.S. Citizenship and Immigration Services. Civics and Citizenship Multimedia Presentation: A Promise of Freedom : An Introduction to U.S. History and Civics for Immigrants : Becoming a U.S. Citizen : An Overview of the Naturalization Process. Rev. 04/10. U.S. Dept. of Homeland Security, U.S. Citizenship and Immigration Services : For sale by the Supt. of Docs., U.S. G.P.O., 2010.