Dyfyniad APA

Willis, J. F. 1., & Fabritius,M.Manfred. (2005). Explorations in macroeconomics (7th ed.). CAT Publishing Co.

Dyfyniad Arddull Chicago

Willis, James Frederick 1932, and Fabritius,M.Manfred. Explorations in Macroeconomics. 7th ed. Redding, Calif.: CAT Publishing Co, 2005.

Dyfyniad MLA

Willis, James Frederick 1932, and Fabritius,M.Manfred. Explorations in Macroeconomics. 7th ed. CAT Publishing Co, 2005.

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