1. Adelman, H. (1978). The concept of intrinsic motivation: implications for practice and research with the learning disabled. Learning Disability Quarterly, 1(2), 43–54.
2. Application of the ARCS model of motivational design. (1987). Application of the ARCS model of motivational design. Hillsdale, NJ: Lawrence Earlbaum Associates.
3. Bandura, A. (1986). Social foundations of thought and action: a social cognitive theory. Englewood Cliffs, NJ: Prentice-Hall.
4. Bandura, A., & Wood, R. E. (1989). Effect of perceived controllability and performance standards on self-regulation of complex decision making. Journal of Personality and Social Psychology, 56, 805–814.
5. Baxter Magolda, M. B. (1999). The evolution of epistemology: refining contextual knowledge at twentysomething. Journal of College Student Development, 40(4), 333–344.