APA (7th ed.) Citation

Case, K. E., Fair, R. C., & Oster, S. M. Principles of economics (Thirteenth edition, global edition.).

Chicago Style (17th ed.) Citation

Case, Karl E., Ray C. Fair, and Sharon M. Oster. Principles of Economics. Thirteenth edition, global edition.

MLA (9th ed.) Citation

Case, Karl E., et al. Principles of Economics. Thirteenth edition, global edition.