Dyfyniad APA

Weaver, D. B. (1998). Ecotourism in the less developed world David B. Weaver. CAB International.

Dyfyniad Arddull Chicago

Weaver, David B. Ecotourism in the Less Developed World David B. Weaver. CAB International, 1998.

Dyfyniad MLA

Weaver, David B. Ecotourism in the Less Developed World David B. Weaver. CAB International, 1998.

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