APA-referens (7:e uppl.)

Case, K. E., Fair, R. C., Oster, S. M., & Sharma, A. (2013). Principles of economics (Tenth edition.). Pearson Education Limited.

Chicago-referens (17:e uppl.)

Case, Karl E., Ray C. Fair, Sharon M. Oster, och Aisha Sharma. Principles of Economics. Tenth edition. Essex, England: Pearson Education Limited, 2013.

MLA-referens (9:e uppl.)

Case, Karl E., et al. Principles of Economics. Tenth edition. Pearson Education Limited, 2013.