1. An Investigations and Analysis of the Major Teaching Objectives of Science Education in the Secondary Schools of California, unpublished Master's thesis, The Claremont Graduate School, Claremont, California, 1948. 111 PP.
2. The present status of science objectives in the secondary schools of California
3. Educational Research, Principles and Practices. Bloomington, Indiana: Educational Publication, 1944, p. 180.
4. The Elements of Research. New Prentice-Hall, 1946, 139.
5. The Questionnaire. Research Bulletin, Vol VIII, No. 1. Washington, D. C.: National Education Association, 1930, p 6.