Cita APA (7a ed.)

O'Sullivan, A., & Sheffrin, S. M. (2006). Economics: Principles and tools (4th ed.). Pearson/ Prentice Hall.

Cita Chicago Style (17a ed.)

O'Sullivan, Arthur, y Steven M. Sheffrin. Economics: Principles and Tools. 4th ed. Upper Saddle River, NJ: Pearson/ Prentice Hall, 2006.

Cita MLA (8a ed.)

O'Sullivan, Arthur, y Steven M. Sheffrin. Economics: Principles and Tools. 4th ed. Pearson/ Prentice Hall, 2006.