Simpson, A. M. (1972). Employment security for overseas officers of the public service of Papua New Guinea: A report to the Minister for External Territories and the Chief Minister of Papua New Guinea. Australian Government Publishing Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSimpson, A. M. Employment Security for Overseas Officers of the Public Service of Papua New Guinea: A Report to the Minister for External Territories and the Chief Minister of Papua New Guinea. Canberra: Australian Government Publishing Service, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSimpson, A. M. Employment Security for Overseas Officers of the Public Service of Papua New Guinea: A Report to the Minister for External Territories and the Chief Minister of Papua New Guinea. Australian Government Publishing Service, 1972.