Dyfyniad APA

James Gerber. (2013). International Economics (6th ed.). Pearson.

Dyfyniad Arddull Chicago

James Gerber. International Economics. 6th ed. Delhi: Pearson, 2013.

Dyfyniad MLA

James Gerber. International Economics. 6th ed. Pearson, 2013.

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