Dyfyniad APA

Hall, R. E., & Lieberman, M. (1998). Economics: Principles and applications. South-Western.

Dyfyniad Arddull Chicago

Hall, Robert E., and Marc Lieberman. Economics: Principles and Applications. Cincinnati: South-Western, 1998.

Dyfyniad MLA

Hall, Robert E., and Marc Lieberman. Economics: Principles and Applications. South-Western, 1998.

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