Citazione Stile APA (7a Edizione)

Hudman, L. E., & Jackson, R. H. (1994). Geography of travel and tourism (2nd ed.). Delmar Publishers.

Citazione stile Chigago Style (17a edizione)

Hudman, Lloyd E., e Richard H. Jackson. Geography of Travel and Tourism. 2nd ed. Albany, N.Y: Delmar Publishers, 1994.

Citatione MLA (9a ed.)

Hudman, Lloyd E., e Richard H. Jackson. Geography of Travel and Tourism. 2nd ed. Delmar Publishers, 1994.