Goludner, A. W.The Norm of Reciprocity: A Preliminary Statement. American Sociological Review, 1960, 25, 161-178.
6.
Hebb, D. O. and Thompson, W. R.The Social Significance of Animal Studies. In Lindsay, G. (Ed.), Handbook of Social Psychology, Vol. I. Cambridge, Mass.: Addison-Wesley, 1950, pp. 531-561.
7.
Jahoda, Marie.Conformity and Independence: A Psychological Analysis. Human Relations, 1959, 12, 99-120.
8.
McClelland, David B.The Achieving Society , New York: D. Van Nostrand , 1961.
9.
Thorndike, R. L. and Hagen, E.Measurement and Evaluation in Psychology and Education . New York: Wiley, 1961.
10.
Wherry, Robert J., Sr. Hierarchical Factor Solutions Without Rotation. Psychometrika, 1959, 24, 45-51.
11.
Wherry, R. J. and Winer, B. J.A Method of Factoring Large Numbers of Items. Psychometrika, 1953, 18, 161-179.
12.
White, Robert W.Motivation Reconsidered: The Concept of Competence. Psychological Review, 1959, 66, 297-333.