Citazione Stile APA (7a Edizione)

Krugman, P. R., Obstfeld, M., & Melitz, M. J. (2018). International economics: Theory and policy (Eleventh edition.). Pearson.

Citazione stile Chigago Style (17a edizione)

Krugman, Paul R., Maurice Obstfeld, e Marc J. Melitz. International Economics: Theory and Policy. Eleventh edition. New York: Pearson, 2018.

Citatione MLA (9a ed.)

Krugman, Paul R., et al. International Economics: Theory and Policy. Eleventh edition. Pearson, 2018.