APA (7 वां संस्करण) प्रशस्ति पत्र

United States. Congress. House. Committee on Homeland Security; Twinchek, M. [. Homeland Security Act of 2002 Updated Through October 14, 2008.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

United States. Congress. House. Committee on Homeland Security; Twinchek, Michael [Editor]. Homeland Security Act of 2002 Updated Through October 14, 2008.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

United States. Congress. House. Committee on Homeland Security; Twinchek, Michael [Editor]. Homeland Security Act of 2002 Updated Through October 14, 2008.

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