Case, K. E., Fair, R. C., & Oster, S. M. (2012). Principles of economics (10th ed.). Prentice Hall.
Chicago Style (17th ed.) CitationCase, Karl E., Ray C. Fair, and Sharon M. Oster. Principles of Economics. 10th ed. Boston: Prentice Hall, 2012.
MLA (9th ed.) CitationCase, Karl E., et al. Principles of Economics. 10th ed. Prentice Hall, 2012.
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