APA (7th ed.) Citation

Case, K. E., Fair, R. C., & Oster, S. M. (2009). Principles of macroeconomics (9th ed.). Pearson Prentice Hall.

Chicago Style (17th ed.) Citation

Case, Karl E., Ray C. Fair, and Sharon M. Oster. Principles of Macroeconomics. 9th ed. Upper Saddle River, NJ: Pearson Prentice Hall, 2009.

MLA (9th ed.) Citation

Case, Karl E., et al. Principles of Macroeconomics. 9th ed. Pearson Prentice Hall, 2009.