Cita APA (7a ed.)

Royal Geographical Society (Great Britain), Cater, E., & Lowman, G. (1994). Ecotourism: A sustainable option? Wiley.

Cita Chicago Style (17a ed.)

Royal Geographical Society (Great Britain), Erlet Cater, y Gwen Lowman. Ecotourism: A Sustainable Option? Chichester ; New York: Wiley, 1994.

Cita MLA (8a ed.)

Royal Geographical Society (Great Britain), et al. Ecotourism: A Sustainable Option? Wiley, 1994.