(en) The Global Ecotourism Network (GEN), « What is (not) Ecotourism ? », sur globalecotourismnetwork.org, . « … responsible travel to natural areas that conserves the environment, sustains the well-being of the local people, and creates knowledge and understanding through interpretation and education of all involved (visitors, staff and the visited). »
google.fr
books.google.fr
Roy Ballantyne et Jan Packer, International Handbook on Ecotourism, Edward Elgar Publishing, , 250 p. (ISBN978-0-85793-997-5, lire en ligne), p. 20.
(en) Christina A.D. Semeniuk, Sophie Bourgeon, Sylvia L. Smith et Kristina D. Rothley, « Hematological differences between stingrays at tourist and non-visited sites suggest physiological costs of wildlife tourism », Biological Conservation, vol. 142, no 8, , p. 1818-1829 (présentation en ligne)
