United States. Government Printing Office. (2011). Keeping America informed: The U.S. Government Printing Office : 150 years of service to the nation. United States Government Printing Office.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)United States. Government Printing Office. Keeping America Informed: The U.S. Government Printing Office : 150 Years of Service to the Nation. [Washington, District of Columbia]: United States Government Printing Office, 2011.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)United States. Government Printing Office. Keeping America Informed: The U.S. Government Printing Office : 150 Years of Service to the Nation. United States Government Printing Office, 2011.
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