1. De Raad, B., & Schuwenburg, H.C. (1996). Personality in learning and education: A Review. European Journal of personality, 10, 303-306.
2. Ackerman, Ph. L. & Heggestad, E.D. (1997). Intelligence, personality, and interests: Evidence for overlapping traits, Psychological Bulletin, Vol 121(2), Mar 1997, 219-245.
3. Eysenck H.J. & Eysenck M.W. (1985) Personality and Individual Differences: A Natural Science Approach. Plenum Press, London.
4. Furnham A. (1992) Personality at Work. The Role of Individual Differences in the Workplace. Routeledge, London.
5. Bandura A. (1986) Social Foundations of Thought and Action: A Social Cognitive Theory. Prentice-Hall, Englewood Cliffs, NJ.