Cita APA

De Blij, H. J. (1974). Essentials of geography: Regions and concepts. New York: John Wiley & Sons.

Citación estilo Chicago

De Blij, Harm J. Essentials of Geography: Regions and Concepts. New York: John Wiley & Sons, 1974.

Cita MLA

De Blij, Harm J. Essentials of Geography: Regions and Concepts. New York: John Wiley & Sons, 1974.