Ecotourism

MLA

Fennell, David A. Ecotourism : an Introduction. 2nd ed. New York, NY: Routledge, 2003.

APA

Fennell, D. A. (2003). Ecotourism : an introduction. 2nd ed. New York, NY: Routledge.

Chicago

Fennell, David A., Ecotourism: An Introduction. 2nd ed. New York, NY: Routledge, 2003.