1. Atkinson, R. C. (1968). Computerized instruction and the learning process.American Psychology, 23, 225–239.
2. Block, J. H. (1971).Mastery learning: Theory and practice. New York: Holt, Rinehart, Winston.
3. Carrier, C. (1984). Do learners make good choices?Instructional Innovator, 29(2), 15–17.
4. Carroll, J. B. (1963). A model of school learning.Teachers College Board, 64, 723–733.
5. Cross, P. K. (1976).Accent on learning. San Francisco, CA: Jossey-Bass.