1. “Science in the Elementary School,” New Developments in Elementary School Science—A Conference. John W. Renner: Director, Frontiers of Science Foundation of Oklahoma, Inc., Oklahoma City, 1964, p. 10.
2. The School as a Center of Inquiry, Harper and Row, New York, 1967, pp. 33–34.
3. Supervisory Behavior in Education, Prentice-Hall, Englewood Cliffs, N. J., 1964, pp. 164–165.