Cooley, W. W., & Lohnes, P. R. (1976). Evaluation research in education. Irvington Publishers : distributed by Halsted Press.

Cooley, William W., and Paul R. Lohnes. Evaluation Research in Education. New York: Irvington Publishers : distributed by Halsted Press, 1976.

Cooley, William W., and Paul R. Lohnes. Evaluation Research in Education. Irvington Publishers : distributed by Halsted Press, 1976.