APA (7th ed.) Citation

Wheeler, J. O., & Muller, P. O. (1981). Economic geography. Wiley.

Chicago Style (17th ed.) Citation

Wheeler, James O., and Peter O. Muller. Economic Geography. New York: Wiley, 1981.

MLA (8th ed.) Citation

Wheeler, James O., and Peter O. Muller. Economic Geography. Wiley, 1981.