APA (7 वां संस्करण) प्रशस्ति पत्र

U.S. Agency for International Development Office of Public Safety & Walton, F. E. (1966). Survey of Philippine law enforcement. [s.n.].

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

U.S. Agency for International Development Office of Public Safety और Frank E. Walton. Survey of Philippine Law Enforcement. Washington, D.C: [s.n.], 1966.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

U.S. Agency for International Development Office of Public Safety और Frank E. Walton. Survey of Philippine Law Enforcement. [s.n.], 1966.