Cita APA

Duffy, R., & Duffy, R. (2002). A trip too far: Ecotourism, politics and exploitation (1. edition.). London, United Kingdom: Earthscan.

Citación estilo Chicago

Duffy, Rosaleen, y Rosaleen Duffy. A Trip Too Far: Ecotourism, Politics and Exploitation. 1. edition. London, United Kingdom: Earthscan, 2002.

Cita MLA

Duffy, Rosaleen, y Rosaleen Duffy. A Trip Too Far: Ecotourism, Politics and Exploitation. 1. edition. London, United Kingdom: Earthscan, 2002.