APA aipamena

Hall,Michael C. (1998). Sustainable tourism: A geographical perspective. Addison Wesley Longman.

Chicago Style aipamena

Hall,Michael C. Sustainable Tourism: A Geographical Perspective. New York: Addison Wesley Longman, 1998.

MLA aipamena

Hall,Michael C. Sustainable Tourism: A Geographical Perspective. Addison Wesley Longman, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.