Arnaud Gerkens, J. (1989). Foundation of exploration geographics. Elsevier.
Chicagoスタイル(17版)引用形式Arnaud Gerkens, J..C.d. Foundation of Exploration Geographics. New York: Elsevier, 1989.
MLA(9版)引用形式Arnaud Gerkens, J..C.d. Foundation of Exploration Geographics. Elsevier, 1989.
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