1. Anderson, R. C., and Biddle, W. B. On asking people questions about what they are reading. In G. Bower (Ed.),Psychology of learning and motivation, vol. 9. New York Academic Press, 1975.
2. Bruner, J. S.The process of education. Cambridge: Harvard University Press, 1960.
3. Collins, A. M., and Quillian, M. R. Experiments on semantic memory and language comprehension. In L. Gregg (Ed.),Cognition in Learning and Memory. New York: John Wiley, 1972. Pp. 117–137.
4. Englemann, S.Conceptual learning. San Rafael, Calif: Dimensions Press, 1969.
5. Gagné, R. M.The conditions of learning. New York: Holt-Rinehart & Winston, 1965.