1. Bandura, A. (1997). Self-efficacy: The exercise of control. New York: Freeman.
2. Brown, A.L. & Campione, J.C. (1994). Guided discovery in a community of learners. In K. McGilly (Ed.), Classroom lessons: Integrating cognitive theory and classroom practice. Cambridge, MA: MIT Press/Bradford Books.
3. Brown, A.L. & Campione, J.C. (1996). Psychological theory and the design of innovative learning environments: On procedures, principles, and systems. In L. Schauble & R. Glaser (Eds.), Innovations in learning: New environments for education (pp.289–325). Mahwah, NJ: Erlbaum.
4. Connell, J.P. & Wellborn, J.G. (1991). Competence, autonomy, and relatedness: A motivational analysis of self-system processes. In M.R. Gunnnar & L.A. Sroufe (Eds.), Self processes in development: Minnesota Symposium on Child Psychology: Vol. 29 (pp.244–254), Hillsdale, NJ: Lawrence Erlbaum.
5. The darker and brighter sides of human existence: Basic psychological needs as a unifying concept;Deci;Journal of Educational Psychology,2000