(1981). Evaluation Risearch And Practice Comparative And International Perspectives Edited By Robert A. Levine...[et. Al]. Sage Publications.
Čikaški stil citiranja (17. izdanje)Evaluation Risearch And Practice Comparative And International Perspectives Edited By Robert A. Levine...[et. Al]. Sage Publications, 1981.
MLA način citiranja (8. izdanje)Evaluation Risearch And Practice Comparative And International Perspectives Edited By Robert A. Levine...[et. Al]. Sage Publications, 1981.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.