Style de citation APA (7e éd.)

Boo, E. (1990). Ecotourism: The potentials and pitfalls. World Wildlife Fund.

Style de citation Chicago (17e éd.)

Boo, Elizabeth. Ecotourism: The Potentials and Pitfalls. Washington, D.C: World Wildlife Fund, 1990.

Style de citation MLA (9e éd.)

Boo, Elizabeth. Ecotourism: The Potentials and Pitfalls. World Wildlife Fund, 1990.