Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

Krugman, Paul R., e Maurice Obstfeld. International Economics: Theory and Policy. Sixth ,ed. Boston San Francisco New York: Addison Wesley, 2003.

Citatione MLA (9a ed.)

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