Weiss, C. H. (1972). Evaluation research: Methods for assessing program effectiveness. Prentice-Hall.
Chicago-viite (17. p.)Weiss, Carol H. Evaluation Research: Methods for Assessing Program Effectiveness. Englewood Cliffs, NJ: Prentice-Hall, 1972.
MLA-viite (9. p.)Weiss, Carol H. Evaluation Research: Methods for Assessing Program Effectiveness. Prentice-Hall, 1972.
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