Dyfyniad APA

Colander, D. C. (2006). Economics (6th ed.). McGraw-Hill/Irwin.

Dyfyniad Arddull Chicago

Colander, David C. Economics. 6th ed. Boston: McGraw-Hill/Irwin, 2006.

Dyfyniad MLA

Colander, David C. Economics. 6th ed. McGraw-Hill/Irwin, 2006.

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