United States. General Accounting Office. (1957). Policy and procedures manual for guidance of federal agencies. U.S. General Accounting Office.
芝加哥风格引文United States. General Accounting Office. Policy and Procedures Manual for Guidance of Federal Agencies. Washington, D.C.: U.S. General Accounting Office, 1957.
MLA引文United States. General Accounting Office. Policy and Procedures Manual for Guidance of Federal Agencies. U.S. General Accounting Office, 1957.
警告：这些引文格式不一定是100％准确.