Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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