Meyers, W. R. (1981). The evaluation enterprise. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Meyers, William R. The Evaluation Enterprise. San Francisco: Jossey-Bass, 1981.
Lua MLA (8ú heag.)Meyers, William R. The Evaluation Enterprise. Jossey-Bass, 1981.
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