Rojas, C. (1999). Ecologically dangerous and economically uncertain tourism.
シカゴスタイル引用形Rojas, Carmen. Ecologically Dangerous and Economically Uncertain Tourism. 1999.
MLA引用形式Rojas, Carmen. Ecologically Dangerous and Economically Uncertain Tourism. 1999.
警告: この引用は必ずしも正確ではありません.