References
- Fruchter, Benjamin. Introduction to Factor Analysis (New York: D. Van Nostrand Co., 1954).
- Snedecor, George W. Statistical Methods (Ames, Iowa: The Collegiate Press, 1948).
- Thurstone, L. L. Multiple-Factor Analysis (Chicago: University of Chicago Press, 1947).
- Towner, Leonard W. “Factor Analysis of Medical Students’ Performance on a Test of Cancer Knowledge,” Educational and Psychological Measurement (Spring 1957), 115–30.