Weiss, C. H. (1972). Evaluation research: Methods for assessing program effectiveness. Prentice-Hall.
Cita Chicago Style (17a ed.)Weiss, Carol H. Evaluation Research: Methods for Assessing Program Effectiveness. New Jersey: Prentice-Hall, 1972.
Cita MLA (8a ed.)Weiss, Carol H. Evaluation Research: Methods for Assessing Program Effectiveness. Prentice-Hall, 1972.
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