APA (7th ed.) Citation

Lindberg, K., & Hawkins, D. E. (1993). Ecotorourism: A guide for planners and managers. The Ecotourism Society.

Chicago Style (17th ed.) Citation

Lindberg, Kreg, and Donald E. Hawkins. Ecotorourism: A Guide for Planners and Managers. North Benningto, Vermont: The Ecotourism Society, 1993.

MLA (9th ed.) Citation

Lindberg, Kreg, and Donald E. Hawkins. Ecotorourism: A Guide for Planners and Managers. The Ecotourism Society, 1993.