APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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