Citazione Stile APA (7a Edizione)

Krugman, P. R., & Obstfeld, M. (2003). International economics: Theory and policy (6th ed.). Addison-Wesley.

Citazione stile Chigago Style (17a edizione)

Krugman, Paul R., e Maurice Obstfeld. International Economics: Theory and Policy. 6th ed. Boston: Addison-Wesley, 2003.

Citatione MLA (9a ed.)

Krugman, Paul R., e Maurice Obstfeld. International Economics: Theory and Policy. 6th ed. Addison-Wesley, 2003.