Dyfyniad APA

Clayton, G. E. (2001). Economics: Principles & Practices. McGraw - HillCompanies, Inc.

Dyfyniad Arddull Chicago

Clayton, Gary E. Economics: Principles & Practices. McGraw - HillCompanies, Inc, 2001.

Dyfyniad MLA

Clayton, Gary E. Economics: Principles & Practices. McGraw - HillCompanies, Inc, 2001.

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