Cita APA (7th ed.)

O'Sullivan, A., & Sheffrin, S. M. (2007). Economics: Principles in action (Classroom ed.). Pearson Prentice Hall.

Cita Chicago (17th ed.)

O'Sullivan, Arthur, i Steven M. Sheffrin. Economics: Principles in Action. Classroom ed. Boston: Pearson Prentice Hall, 2007.

Cita MLA (9th ed.)

O'Sullivan, Arthur, i Steven M. Sheffrin. Economics: Principles in Action. Classroom ed. Pearson Prentice Hall, 2007.