Dyfyniad APA

Coppock, L., & Dirk Mateer; Lee Coppock. (2014). Principles of economics. New York: W.W. Norton.

Dyfyniad Arddull Chicago

Coppock, Lee, và Dirk Mateer; Lee Coppock. Principles of Economics. New York: W.W. Norton, 2014.

Dyfyniad MLA

Coppock, Lee, và Dirk Mateer; Lee Coppock. Principles of Economics. New York: W.W. Norton, 2014.

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