Gabor, P. M., & Grinnell, R. M. (1994). Evaluation and quality improvement in the human services. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Gabor, Peter M.S.W, agus Richard M. Grinnell. Evaluation and Quality Improvement in the Human Services. Boston: Allyn and Bacon, 1994.
Lua MLA (9ú heag.)Gabor, Peter M.S.W, agus Richard M. Grinnell. Evaluation and Quality Improvement in the Human Services. Allyn and Bacon, 1994.
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