Friedman, I. (1999). Teacher perceived work autonomy: The concept and its measurement. Educational and Psychological Measurement, 59 (1), 58-76.
Fosnot, C. (1996). Constructivism: A Psychological theory of learning. In C. Fosnot (Ed.) Constructivism: Theory, perspectives, and practice, (pp.8-33). New York: Teachers College Press.
Honebein, P. (1996). Seven goals for the design of Constructivist learning environments. In B. Wilson, Constructivist learning environments, (pp. 17-24). New Jersey: Educational Technology Publications.
Jonassen, D. (1991, September). Evaluating Constructivist Learning. Educational Technology, 36(9), 28-33.
Jonassen, D. (1994, April). Thinking technology. Educational Technology, 34(4), 34-37.
Little, David (2007). Introduction: Reconstructing learner and teacher autonomy in language education. In: Andrew Barfield, Stephen H. Brown. Eds. Reconstructing autonomy in language education: inquiry and innovation. Hampshire and New York: Palgrave Macmillan.
Murphy, E. (1997). Constructivism: From philosophy to practice. Retrieved from http://www.ucs.mun.ca/~emurphy/stemnet/cle.html
von Glasersfeld, E. (1995). A constructivist approach to teaching.Constructivism in education, (pp.3-16). New Jersey: Lawrence Erlbaum Associates, Inc.
von Glasersfeld, E. (1996). Introduction: Aspects of constructivism. Constructivism: Theory, perspectives, and practice, (pp.3-7). New York: Teachers College Press.
Vygotsky, L. (1978). Mind in Society: The Development of Higher Psychological Processes MA: Harvard University Press.