Cita APA (7th ed.)

De Blij, H. J., & Muller, P. O. (1993). Physical geography of the global environment. Wiley.

Cita Chicago (17th ed.)

De Blij, Harm J., i Peter O. Muller. Physical Geography of the Global Environment. New York: Wiley, 1993.

Cita MLA (8th ed.)

De Blij, Harm J., i Peter O. Muller. Physical Geography of the Global Environment. Wiley, 1993.