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