Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Royal Geographical Society (Gran Bretaña), Erlet Cater, y Gwen Lowman. Ecotourism: A Sustainable Option? Chichester [etc.]: Wiley, 1994.

Cita MLA (9a ed.)

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