Cita APA (7th ed.)

BLIJ, H. J. (1974). Essentials of geography: Regions and concepts. John Wiley and Sons.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

BLIJ, Harm J. Essentials of Geography: Regions and Concepts. John Wiley and Sons, 1974.