Programmed Spelling—A Second Investigation

Gaudry E. & Selleck R. “An Investigation of Programmed Spelling in two Victorian Primary Schools”. Australian Journal of Education. 9, 1, March 1965. 13–28.

Hays W. L. Statistics for Psychologists. New York: Holt, Rinehart & Winston. 1963.

Lindquist E. F. Design and Analysis of Experiments in Psychology and Education. Boston: Houghton. 1953.