APA (7th ed.) Citation

Hoover, E. M. (1975). An introduction to regional economics (2d ed.). Knopf.

Chicago Style (17th ed.) Citation

Hoover, Edgar M. An Introduction to Regional Economics. 2d ed. New York: Knopf, 1975.

MLA (8th ed.) Citation

Hoover, Edgar M. An Introduction to Regional Economics. 2d ed. Knopf, 1975.