Dyfyniad APA

Petersen, H. C., & Lewis, W. C. (1999). Managerial economics (Fourth edition.). Prentice Hall.

Dyfyniad Arddull Chicago

Petersen, H. Craig, and W. Cris Lewis. Managerial Economics. Fourth edition. Upper Saddle River, N.J: Prentice Hall, 1999.

Dyfyniad MLA

Petersen, H. Craig, and W. Cris Lewis. Managerial Economics. Fourth edition. Prentice Hall, 1999.

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