APA (7th ed.) Citation

Backman, K. F., Cater, E., Eagles, P. F. J., McKercher, B., & Weaver, D. B. (2001). The encyclopedia of ecotourism. CABI. https://doi.org/10.1079/9780851993683.0000

Chicago Style (17th ed.) Citation

Backman, Kenneth F., Erlet Cater, Paul F. J. Eagles, Bob McKercher, and David B. Weaver. The Encyclopedia of Ecotourism. Wallingford, Oxfordshire, UK: CABI, 2001. https://doi.org/10.1079/9780851993683.0000.

MLA (9th ed.) Citation

Backman, Kenneth F., et al. The Encyclopedia of Ecotourism. CABI, 2001. https://doi.org/10.1079/9780851993683.0000.