Cita APA (7th ed.)

Hoover, E. M., & Giarratani, F. (2004). An introduction to regional economics. Regional Research Institute, West Virginia University.

Cita Chicago (17th ed.)

Hoover, Edgar M., i Frank Giarratani. An Introduction to Regional Economics. [West Virginia]: Regional Research Institute, West Virginia University, 2004.

Cita MLA (9th ed.)

Hoover, Edgar M., i Frank Giarratani. An Introduction to Regional Economics. Regional Research Institute, West Virginia University, 2004.