1. Glass, D. C. (1977). Behavior patterns, stress, and coronary disease.Hillsdale, NJ: Lawrence Erlbaum Associates, Inc.
2. Gorsuch, R. L. (1974). Factor analysis.Philadelphia: Saunders.
3. Jenkins, C. D., Zyzanski, S. J. & Rosenman, R H. (1979).Jenkins Activity Survey. New York: The Psychological Corporation.
4. Joreskog, K. G. & Sorbom, D. (1978). LISREL IV: Analysis of linear strucrural relationships by the method of maximum likelihood. Chicago: National Educational Resources.
5. A reliability coefficient for maximum likelihood factor analysis