Dyfyniad APA

Carey, R. G., & Posavac, E. J. (1989). Program evaluation: Methods and case studies (3.).

Dyfyniad Arddull Chicago

Carey, Raymond G., and Emel J. Posavac. Program Evaluation: Methods and Case Studies. 3. New Jersey, Prentice Hall, 1989.

Dyfyniad MLA

Carey, Raymond G., and Emel J. Posavac. Program Evaluation: Methods and Case Studies. 3. 1989.

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