Dyfyniad APA

Krugman, P. R., Obstfeld, M., & Melitz, M. J. (2015). International economics: Theory and policy (Global and Tenth edition.). Pearson.

Dyfyniad Arddull Chicago

Krugman, Paul R., Maurice Obstfeld, and Marc J. Melitz. International Economics: Theory and Policy. Global and Tenth edition. Boston: Pearson, 2015.

Dyfyniad MLA

Krugman, Paul R., et al. International Economics: Theory and Policy. Global and Tenth edition. Pearson, 2015.

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