Dyfyniad APA

N. Gregory Mankiw. (2007). Principles of Economics. Mason, OH: Thomson/South-Western.

Dyfyniad Arddull Chicago

N. Gregory Mankiw. Principles of Economics. Mason, OH: Thomson/South-Western, 2007.

Dyfyniad MLA

N. Gregory Mankiw. Principles of Economics. Mason, OH: Thomson/South-Western, 2007.

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