Cita APA

Fennell, D. A. (2003). Ecotourism: An introduction (2nd ed.). London ; New York: Routledge.

Citación estilo Chicago

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

Cita MLA

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