Wearing, S. (2009). Ecotourism: Impacts potentials and possibilities (2nd ed.). Elsevier.
シカゴスタイル引用形Wearing, Stephen. Ecotourism: Impacts Potentials and Possibilities. 2nd ed. Amsterdam: Elsevier, 2009.
MLA引用形式Wearing, Stephen. Ecotourism: Impacts Potentials and Possibilities. 2nd ed. Elsevier, 2009.
警告: この引用は必ずしも正確ではありません.