Cita APA (7th ed.)

Krugman, P. R., Obstfeld, M., & Melitz, M. J. (2015). International economics: Theory and policy (Global and Tenth edition.). Pearson.

Cita Chicago (17th ed.)

Krugman, Paul R., Maurice Obstfeld, i Marc J. Melitz. International Economics: Theory and Policy. Global and Tenth edition. Boston: Pearson, 2015.

Cita MLA (8th ed.)

Krugman, Paul R., et al. International Economics: Theory and Policy. Global and Tenth edition. Pearson, 2015.