Weaver, D. B. (1998). Ecotourism in the less developed world David B. Weaver. CAB International.
Chicagoスタイル(17版)引用形式Weaver, David B. Ecotourism in the Less Developed World David B. Weaver. CAB International, 1998.
MLA(8版)引用形式Weaver, David B. Ecotourism in the Less Developed World David B. Weaver. CAB International, 1998.
警告: この引用は必ずしも正確ではありません.