References
- Berdie, R. F. and Layton, W. L.. Manual, Minnesota Counseling Inventory (New York: Psychological Corp., 1957).
- Fruchter, B. Introduction to Factor Analysis (New York: D. Van Nostrand Company, Inc., 1954).
- Harris, C. W.. “Direct Rotation to Primary Structure,” Journal of Educational Psychology, XXXIX (1948), pp. 449–468.