Gallato, C. G. (2012). Eco-tourism in the Philippines: Educational and recreational value of the Alayan cave systems. Inderscience Publishers.
シカゴスタイル引用形Gallato, Cristina G. Eco-tourism in the Philippines: Educational and Recreational Value of the Alayan Cave Systems. Inderscience Publishers, 2012.
MLA引用形式Gallato, Cristina G. Eco-tourism in the Philippines: Educational and Recreational Value of the Alayan Cave Systems. Inderscience Publishers, 2012.
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