(2011). The United States government manual 2011. Office of the Federal Register, National Archives and Records Administration.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रThe United States Government Manual 2011. Washington, D.C: Office of the Federal Register, National Archives and Records Administration, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रThe United States Government Manual 2011. Office of the Federal Register, National Archives and Records Administration, 2011.
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