Topagur, R. (1982). A history of the Police Association of Papua New Guinea, 1964-1981. University of Papua New Guinea.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTopagur, Raphael. A History of the Police Association of Papua New Guinea, 1964-1981. Port Moresby: University of Papua New Guinea, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTopagur, Raphael. A History of the Police Association of Papua New Guinea, 1964-1981. University of Papua New Guinea, 1982.
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