APA (7th ed.) Citation

De Blij, H. J. (1971). Geography: Regions & concepts. Wiley.

Chicago Style (17th ed.) Citation

De Blij, Harm J. Geography: Regions & Concepts. New York: Wiley, 1971.

MLA (9th ed.) Citation

De Blij, Harm J. Geography: Regions & Concepts. Wiley, 1971.