Cita APA (7a ed.)

O'Sullivan, A., Sheffrin, S. M., & Perez, S. J. (2018). Economics: Principles, applications, and tools (Ninth, Global edition.). Pearson.

Cita Chicago Style (17a ed.)

O'Sullivan, Arthur, Steven M. Sheffrin, y Stephen J. Perez. Economics: Principles, Applications, and Tools. Ninth, Global edition. Harlow, England: Pearson, 2018.

Cita MLA (8a ed.)

O'Sullivan, Arthur, et al. Economics: Principles, Applications, and Tools. Ninth, Global edition. Pearson, 2018.