Dyfyniad APA

Schiller, B. R. (1997). The economy today (7th ed.). McGraw-Hill Companies.

Dyfyniad Arddull Chicago

Schiller, Bradley R. The Economy Today. 7th ed. New York: McGraw-Hill Companies, 1997.

Dyfyniad MLA

Schiller, Bradley R. The Economy Today. 7th ed. McGraw-Hill Companies, 1997.

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