Παραπομπή APA

Krugman, P. R., & Obstfeld, M. (1996). International economics: Theory and policy (4th ed.). Addison Wesley.

Παραπομπή Chicago Style

Krugman, Paul R., και Maurice Obstfeld. International Economics: Theory and Policy. 4th ed. Massachusetts: Addison Wesley, 1996.

Παραπομπή MLA

Krugman, Paul R., και Maurice Obstfeld. International Economics: Theory and Policy. 4th ed. Addison Wesley, 1996.