Citazione Stile APA (7a Edizione)

Krugman, P. R., Obstfeld, M., & Melitz, M. J. (2022). International economics: Theory and policy (12th ed.). Pearson.

Citazione stile Chigago Style (17a edizione)

Krugman, Paul R., Maurice Obstfeld, e Marc J. Melitz. International Economics: Theory and Policy. 12th ed. Boston: Pearson, 2022.

Citatione MLA (9a ed.)

Krugman, Paul R., et al. International Economics: Theory and Policy. 12th ed. Pearson, 2022.