Dyfyniad APA

Mankiw, N. G. (2009). Principles of economics (5th ed.). Mason, OH: South-Western Cengage Learning.

Dyfyniad Arddull Chicago

Mankiw, N. Gregory. Principles of Economics. 5th ed. Mason, OH: South-Western Cengage Learning, 2009.

Dyfyniad MLA

Mankiw, N. Gregory. Principles of Economics. 5th ed. Mason, OH: South-Western Cengage Learning, 2009.

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