Howlett, D. (1967). A geography of Papua and New Guinea. Nelson.
Chicagoスタイル(17版)引用形式Howlett, D.R. A Geography of Papua and New Guinea. Sydney: Nelson, 1967.
MLA(9版)引用形式Howlett, D.R. A Geography of Papua and New Guinea. Nelson, 1967.
警告: この引用は必ずしも正確ではありません.