Ulloa Carmiol, A., & Goicoechea Carranza, C. (2013). Geotourism potential of underground sites in Costa Rica.
シカゴスタイル引用形Ulloa Carmiol, Andrés, , Carlos Goicoechea Carranza. Geotourism Potential of Underground Sites in Costa Rica. 2013.
MLA引用形式Ulloa Carmiol, Andrés, , Carlos Goicoechea Carranza. Geotourism Potential of Underground Sites in Costa Rica. 2013.
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