Durham, W. H., & Stronza, A. (2008). Ecotourism and conservation in the Americas. CAB International.
シカゴスタイル引用形Durham, William H., , Amanda Stronza. Ecotourism and Conservation in the Americas. UK: CAB International, 2008.
MLA引用形式Durham, William H., , Amanda Stronza. Ecotourism and Conservation in the Americas. CAB International, 2008.
警告: この引用は必ずしも正確ではありません.