Congressional Quarterly, Inc. (1971). Guide to the Congress of the United States; origins, history and procedure. Congressional Quarterly Service.
Chicago-referens (17:e uppl.)Congressional Quarterly, Inc. Guide to the Congress of the United States; Origins, History and Procedure. Washington: Congressional Quarterly Service, 1971.
MLA-referens (9:e uppl.)Congressional Quarterly, Inc. Guide to the Congress of the United States; Origins, History and Procedure. Congressional Quarterly Service, 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.