Cita APA (7th ed.)

Hoover, E. M. (1971). An introduction to regional economics. Knopf.

Cita Chicago (17th ed.)

Hoover, Edgar Malone. An Introduction to Regional Economics. New York: Knopf, 1971.

Cita MLA (8th ed.)

Hoover, Edgar Malone. An Introduction to Regional Economics. Knopf, 1971.