Dyfyniad APA

Baumol, W. J., & Blinder, A. S. (1991). Economics: Principles and policy (5th ed.). Harcourt Brace.

Dyfyniad Arddull Chicago

Baumol, William J., and Alan S. Blinder. Economics: Principles and Policy. 5th ed. San Diego: Harcourt Brace, 1991.

Dyfyniad MLA

Baumol, William J., and Alan S. Blinder. Economics: Principles and Policy. 5th ed. Harcourt Brace, 1991.

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