6Showers. C. J., & Zeigler- Hill. V. Organization of self- knowledge: Features, functions, and flexibility. In: M. R. Leary & J. P. Tangney. (Eds.). Handbook of Self and Identity. New York : Guilford Press, 2003:47 - 67
7Campbell, J. D. , TrapneU, P. D. , Heine, S. J. et al. Self- Concept clarity : measurement, personality correlates, and cultural boundaries. Journal of Personality and Social Psychology. 1996, 70 (1), 141-156