Cita APA (7a ed.)

Sobel, R. S. (2006). Understanding economics: Private and public choice. South Western College.

Cita Chicago Style (17a ed.)

Sobel, Rusell S. Understanding Economics: Private and Public Choice. New York: South Western College, 2006.

Cita MLA (9a ed.)

Sobel, Rusell S. Understanding Economics: Private and Public Choice. South Western College, 2006.