Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

De Blij, Harm J., y Peter O. Muller. Geography: Realms, Regions, and Concepts. 8th ed. New York: John Wiley & Sons, 1997.

Cita MLA (8a ed.)

De Blij, Harm J., y Peter O. Muller. Geography: Realms, Regions, and Concepts. 8th ed. John Wiley & Sons, 1997.