Gaya APA

Boo, E. (1990). Ecotourism: The Potentials And Pitfalls Vol. 2 (Country Case Studies) (Vol. 2). Washington DC: World Wildlife Fund.

Gaya MLA

Boo, Elizabeth. "Ecotourism: The Potentials And Pitfalls Vol. 2 (Country Case Studies)". Vol. 2 Washington DC: World Wildlife Fund, 1990. Text.