APA (7th ed.) Citation

Muller, R. A., & Kolenkow, R. J. (1978). Physical geography today: A portrait of a planet (2nd ed.). Random House.

Chicago Style (17th ed.) Citation

Muller, Robert A., and Robert J. Kolenkow. Physical Geography Today: A Portrait of a Planet. 2nd ed. New York: Random House, 1978.

MLA (9th ed.) Citation

Muller, Robert A., and Robert J. Kolenkow. Physical Geography Today: A Portrait of a Planet. 2nd ed. Random House, 1978.