Meyers, W. R. (1981). The Evaluation Enterprise: A realistic appraisal of evaluation career, methods and applications. Jossey-Bass.
Dyfyniad Arddull ChicagoMeyers, William R. The Evaluation Enterprise: A Realistic Appraisal of Evaluation Career, Methods and Applications. San Francisco: Jossey-Bass, 1981.
Dyfyniad MLAMeyers, William R. The Evaluation Enterprise: A Realistic Appraisal of Evaluation Career, Methods and Applications. Jossey-Bass, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.