I. Allport, Gordon W.Personality—A Psychological Interpretation. New York : Henry Holt and Company, 1937.
2.
Binet, Alfred, and Simon, Theophile. "Methodes Nouvelles Pour le Diagnotic Du Niveau Intellectuel Des Normaux." L'Année Psychologique , XI(1905), 191-244.
3.
Buros, Oscar K. "Criticisms of Commonly Used Methods of Validating Achievement Test Items." Proceedings of the I948 Invitational Conference on Testing Problems. Princeton : Educational Testing Service, 1949.
4.
Flanagan, John C. "Critical Requirements for Research Personnel." A Study of Observed Behaviors of Personnel in Research Laboratories. American Institute for Research, 1949.
5.
Hathaway, S. R. and McKinley, J. C. "A Multiphasic Personality Schedule (Minnesota): I. Construction of the Schedule." Journal of Psychology, X(1940), 249 -254.
6.
Pedersen, Ruth. "Development of a Paper-and-Pencil Test of Supervisory Judgment." American Psychologist, IV(1949), 277-278.
7.
Strong, Edward K.Vocational Interests of Men and Women. Stanford, Cal.: Stanford Univ. Press, 1943 .