APA (7th ed.) Citation

De Blij, H. J. (1987). The earth: A physical and human geography (3rd ed.). Wiley.

Chicago Style (17th ed.) Citation

De Blij, Harm J. The Earth: A Physical and Human Geography. 3rd ed. New York: Wiley, 1987.

MLA (9th ed.) Citation

De Blij, Harm J. The Earth: A Physical and Human Geography. 3rd ed. Wiley, 1987.