Cita APA (7th ed.)

Case, K. E., & Fair, R. C. (2007). Principles of economics (8th ed.). Pearson Education.

Cita Chicago (17th ed.)

Case, Karl E., i Ray C. Fair. Principles of Economics. 8th ed. New Delhi: Pearson Education, 2007.

Cita MLA (9th ed.)

Case, Karl E., i Ray C. Fair. Principles of Economics. 8th ed. Pearson Education, 2007.