Dyfyniad APA

McConnell, C. R. (1993). Economics principles, problems, and policies. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

McConnell, Campbell R. Economics Principles, Problems, and Policies. New York: McGraw-Hill, 1993.

Dyfyniad MLA

McConnell, Campbell R. Economics Principles, Problems, and Policies. New York: McGraw-Hill, 1993.

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