Dyfyniad APA

Sloman, J. (2006). Economics (6th ed.). Pearson Education.

Dyfyniad Arddull Chicago

Sloman, John. Economics. 6th ed. New Delhi: Pearson Education, 2006.

Dyfyniad MLA

Sloman, John. Economics. 6th ed. Pearson Education, 2006.

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