Gabor, P., & Grinnell, R. M. (1994). Evaluation and quality improvement in the human services. Allyn & Bacon.
Dyfyniad Arddull ChicagoGabor, Peter, and Richard M. Grinnell. Evaluation and Quality Improvement in the Human Services. Boston: Allyn & Bacon, 1994.
Dyfyniad MLAGabor, Peter, and Richard M. Grinnell. Evaluation and Quality Improvement in the Human Services. Allyn & Bacon, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.