Lucas, L. (1987). Report by the Electoral Commissioner on the 1987 national elections to the 4th Parliament, 5th August 1987. Electoral Commission.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLucas, Luke. Report by the Electoral Commissioner on the 1987 National Elections to the 4th Parliament, 5th August 1987. [Port Moresby: Electoral Commission, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLucas, Luke. Report by the Electoral Commissioner on the 1987 National Elections to the 4th Parliament, 5th August 1987. Electoral Commission, 1987.
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