Pindyck, R. S., & Rubinfeld, D. L. (2001). Microeconomics (5th ed.). Pearson education/Prentice Hall.

Pindyck, Robert S., and Daniel L. Rubinfeld. Microeconomics. 5th ed. Upper Saddle River, N.J. ; New Delhi: Pearson education/Prentice Hall, 2001.

Pindyck, Robert S., and Daniel L. Rubinfeld. Microeconomics. 5th ed. Pearson education/Prentice Hall, 2001.