Dyfyniad APA

(1981). Evaluation Risearch And Practice Comparative And International Perspectives Edited By Robert A. Levine...[et. Al]. Sage Publications.

Dyfyniad Arddull Chicago

Evaluation Risearch And Practice Comparative And International Perspectives Edited By Robert A. Levine...[et. Al]. Sage Publications, 1981.

Dyfyniad MLA

Evaluation Risearch And Practice Comparative And International Perspectives Edited By Robert A. Levine...[et. Al]. Sage Publications, 1981.

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