King, B. (1990). Environmental education at a general level in tertiary education in Papua New Guinea. Dept. of Geography, University of Papua New Guinea.
Chicagoスタイル(17版)引用形式King, Betsy. Environmental Education at a General Level in Tertiary Education in Papua New Guinea. [Port Moresby: Dept. of Geography, University of Papua New Guinea, 1990.
MLA(9版)引用形式King, Betsy. Environmental Education at a General Level in Tertiary Education in Papua New Guinea. Dept. of Geography, University of Papua New Guinea, 1990.
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