APA (7th ed.) Zitazioa
ebrary, Inc, & Buckley, R. (2004). Environmental impacts of ecotourism. CABI Pub..
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Ralf Buckley. Environmental Impacts of Ecotourism. Wallingford, Oxon, UK ; Cambridge, MA, USA: CABI Pub., 2004.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Ralf Buckley. Environmental Impacts of Ecotourism. CABI Pub., 2004.
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