Citazione Stile APA (7a Edizione)

Gastil, R. D. (1975). Cultural regions of the United States. University of Washington Press.

Citazione stile Chigago Style (17a edizione)

Gastil, Raymond D. Cultural Regions of the United States. Seattle: University of Washington Press, 1975.

Citatione MLA (8a ed.)

Gastil, Raymond D. Cultural Regions of the United States. University of Washington Press, 1975.