Dyfyniad APA

Melvin, M., & Boyes, W. (2011). Principles of Macroeconomics (8th ed.). South-Western Cengage Learning.

Dyfyniad Arddull Chicago

Melvin, Michael, and William Boyes. Principles of Macroeconomics. 8th ed. Australia: South-Western Cengage Learning, 2011.

Dyfyniad MLA

Melvin, Michael, and William Boyes. Principles of Macroeconomics. 8th ed. South-Western Cengage Learning, 2011.

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