Dyfyniad APA

Krugman, P. R., & Obstfeld, M. (2000). International economics: Theory and policy (5th ed.). Pearson Addison-Wesley.

Dyfyniad Arddull Chicago

Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. 5th ed. Boston: Pearson Addison-Wesley, 2000.

Dyfyniad MLA

Krugman, Paul R., and Maurice Obstfeld. International Economics: Theory and Policy. 5th ed. Pearson Addison-Wesley, 2000.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.