APA (7th ed.) Zitazioa

De Blij, H., & Muller, P. O. (1997). Geography: Realms, Religions, and concepts (8th ed.). John Wiley & Sons.

Chicago Style (17th ed.) Zitazioa

De Blij, H.J, eta Peter O. Muller. Geography: Realms, Religions, and Concepts. 8th ed. New York: John Wiley & Sons, 1997.

MLA (9th ed.) Zitazioa

De Blij, H.J, eta Peter O. Muller. Geography: Realms, Religions, and Concepts. 8th ed. John Wiley & Sons, 1997.