APA (7th ed.) Citation

Greenland, D., & De Blij, H. J. (1977). The Earth in profile: A physical geography. Canfield Press.

Chicago Style (17th ed.) Citation

Greenland, David, and Harm J. De Blij. The Earth in Profile: A Physical Geography. San Francisco: Canfield Press, 1977.

MLA (9th ed.) Citation

Greenland, David, and Harm J. De Blij. The Earth in Profile: A Physical Geography. Canfield Press, 1977.