(1989). Title 5, United States Code Government Organization and employees.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTitle 5, United States Code Government Organization and Employees. 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTitle 5, United States Code Government Organization and Employees. 1989.
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