Dyfyniad APA

Todaro, M. P., & Smith, S. C. (2011). Economic development (11th ed.). Pearson/Addison-Wesley.

Dyfyniad Arddull Chicago

Todaro, Michael P., and Stephen C. Smith. Economic Development. 11th ed. Harlow, England: Pearson/Addison-Wesley, 2011.

Dyfyniad MLA

Todaro, Michael P., and Stephen C. Smith. Economic Development. 11th ed. Pearson/Addison-Wesley, 2011.

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