APA-referens

León-Páez, E. (1999). The bases of development and the value of ecotourism in Costa Rica.

Chicago-stil citat

León-Páez, Eduardo. The Bases of Development and the Value of Ecotourism in Costa Rica. 1999.

MLA-referens

León-Páez, Eduardo. The Bases of Development and the Value of Ecotourism in Costa Rica. 1999.

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