APA citiranje

Ulloa Carmiol, A., & Goicoechea Carranza, C. (2013). Geotourism potential of underground sites in Costa Rica.

Citación estilo Chicago

Ulloa Carmiol, Andrés, y Carlos Goicoechea Carranza. Geotourism Potential of Underground Sites in Costa Rica. 2013.

MLA citiranje

Ulloa Carmiol, Andrés, y Carlos Goicoechea Carranza. Geotourism Potential of Underground Sites in Costa Rica. 2013.

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