Allport, G. W. 1., Cattell, R. B. 1., Festinger, L. 1., Janis, I. L. 1., Kelly, G. A., & Lindzey, G. (1964). Assessment of human motives. New York, New York: Holt, Rinehart and Winston.

Allport, Gordon Willard 1897-1967, Raymond Bernard 1905 Cattell, León 1919- Festinger, Irving Lester 1918-1990 Janis, George A. Kelly, and Gardner Lindzey. Assessment of Human Motives. New York, New York: Holt, Rinehart and Winston, 1964.

Allport, Gordon Willard 1897-1967, et al. Assessment of Human Motives. New York, New York: Holt, Rinehart and Winston, 1964.