APA (7th ed.) Citation

Case, K. E., Fair, R. C., & Oster, S. E. (2017). Principles of macroeconomics (Twelfth edition.). Pearson Education Limited.

Chicago Style (17th ed.) Citation

Case, Karl E., Ray C. Fair, and Sharon E. Oster. Principles of Macroeconomics. Twelfth edition. Boston: Pearson Education Limited, 2017.

MLA (9th ed.) Citation

Case, Karl E., et al. Principles of Macroeconomics. Twelfth edition. Pearson Education Limited, 2017.