Hunt, Carter A.; Durham, William H.; Driscoll, Laura; Honey, Martha (2015). „Can ecotourism deliver real economic, social, and environmental benefits? A study of the Osa Peninsula, Costa Rica”. Journal of Sustainable Tourism. 23 (3): 339—357. ISSN0966-9582. S2CID55684006. doi:10.1080/09669582.2014.965176..
revues.org
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Hunt, Carter A.; Durham, William H.; Driscoll, Laura; Honey, Martha (2015). „Can ecotourism deliver real economic, social, and environmental benefits? A study of the Osa Peninsula, Costa Rica”. Journal of Sustainable Tourism. 23 (3): 339—357. ISSN0966-9582. S2CID55684006. doi:10.1080/09669582.2014.965176..
worldcat.org
Hunt, Carter A.; Durham, William H.; Driscoll, Laura; Honey, Martha (2015). „Can ecotourism deliver real economic, social, and environmental benefits? A study of the Osa Peninsula, Costa Rica”. Journal of Sustainable Tourism. 23 (3): 339—357. ISSN0966-9582. S2CID55684006. doi:10.1080/09669582.2014.965176..