APA Edition Citation

Harm J De Blij. (1987). The earth: A physical and human geography. John Wiley & sons, INC.

Chicago Edition Citation

Harm J De Blij. The Earth: A Physical and Human Geography. New York: John Wiley & sons, INC, 1987.

MLA Edition Citation

Harm J De Blij. The Earth: A Physical and Human Geography. John Wiley & sons, INC, 1987.