Edwards, S. N. a., McLaughlin, W. J., & Ham, S. H. (1999). Comparative study of ecotourism policy in the americas: Latin America and the Caribbean (Primera edición.). OEA, University of Idaho.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEdwards, Stephen N. autor, William J. McLaughlin, और Sam H. Ham. Comparative Study of Ecotourism Policy in the Americas: Latin America and the Caribbean. Primera edición. Washington: OEA, University of Idaho, 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEdwards, Stephen N. autor, et al. Comparative Study of Ecotourism Policy in the Americas: Latin America and the Caribbean. Primera edición. OEA, University of Idaho, 1999.
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