Weaver, D. B. (1998). Ecotourism in the less developed world David B. Weaver. CAB International.
Chicago-viite (17. p.)Weaver, David B. Ecotourism in the Less Developed World David B. Weaver. CAB International, 1998.
MLA-viite (8. p.)Weaver, David B. Ecotourism in the Less Developed World David B. Weaver. CAB International, 1998.
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