Dyfyniad APA

Owen, J. M. (1999). Program evaluation: Forms and approaches (International ed.). Sage.

Dyfyniad Arddull Chicago

Owen, John M. Program Evaluation: Forms and Approaches. International ed. London: Sage, 1999.

Dyfyniad MLA

Owen, John M. Program Evaluation: Forms and Approaches. International ed. Sage, 1999.

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