Cita APA (7a ed.)

Krugman, P. R., & Wells, R. (2019). Essentials of economics (5th edition.). Worth Publishers.

Cita Chicago Style (17a ed.)

Krugman, Paul R., y Robin Wells. Essentials of Economics. 5th edition. New York: Worth Publishers, 2019.

Cita MLA (9a ed.)

Krugman, Paul R., y Robin Wells. Essentials of Economics. 5th edition. Worth Publishers, 2019.