REFERENCES
- Popham, W. J. Educational evaluation. Englewood Cliffs, N.J.: Prentice-Hall, 1975.
- Scriven, M. The methodology of evaluation. In R. E. Stake (Ed.), Curriculum evaluation. American Educational Research Association Monograph Series on Evaluation, No. 1. Chicago: Rand McNally, 1967. Pp. 39–83.