Dyfyniad APA

Todaro, M. P., & Smith, S. C. (2009). Economic development (10th ed.). Pearson Addison Wesley.

Dyfyniad Arddull Chicago

Todaro, Michael P., and Stephen C. Smith. Economic Development. 10th ed. Boston: Pearson Addison Wesley, 2009.

Dyfyniad MLA

Todaro, Michael P., and Stephen C. Smith. Economic Development. 10th ed. Pearson Addison Wesley, 2009.

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