Congressional Quarterly, Inc. (1971). Guide to the Congress of the United States; origins, history and procedure. Congressional Quarterly Service.
Citace podle Chicago (17th ed.)Congressional Quarterly, Inc. Guide to the Congress of the United States; Origins, History and Procedure. Washington: Congressional Quarterly Service, 1971.
Citace podle MLA (9th ed.)Congressional Quarterly, Inc. Guide to the Congress of the United States; Origins, History and Procedure. Congressional Quarterly Service, 1971.
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