Cita APA

De Blij, H. J. (1990). The earth: An introduction to its physical and human geography. New York, US.: John Wiley & Sons, Inc..

Citación estilo Chicago

De Blij, Harm J. The Earth: An Introduction to Its Physical and Human Geography. New York, US.: John Wiley & Sons, Inc., 1990.

Cita MLA

De Blij, Harm J. The Earth: An Introduction to Its Physical and Human Geography. New York, US.: John Wiley & Sons, Inc., 1990.