Tohutoro APA (7th ed.)
ebrary, Inc, Hill, J., & Gale, T. (2009). Ecotourism and environmental sustainability: Principles and practice. Ashgate.
Tohutoru Kātū Chicago (17th ed.)
ebrary, Inc, Jennifer Hill, me Tim Gale. Ecotourism and Environmental Sustainability: Principles and Practice. Farnham, England ; Burlington, VT: Ashgate, 2009.
Tohutoro MLA (9th ed.)
ebrary, Inc, et al. Ecotourism and Environmental Sustainability: Principles and Practice. Ashgate, 2009.
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