Johnson, K. L. (1980). Kero Community School, 14 July - 22 August 1980: Field report. Indigenous Mathematics Project.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohnson, Karen L. Kero Community School, 14 July - 22 August 1980: Field Report. [Port Moresby]: Indigenous Mathematics Project, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रJohnson, Karen L. Kero Community School, 14 July - 22 August 1980: Field Report. Indigenous Mathematics Project, 1980.
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