1. Bereiter, C. & Scardamalia, M. (1987). The psychology of written composition. Hillsdale: NJ: Erlbaum.
2. Borgman, C. L., Hirsh, S. G., Walter, V. A. & Gallagher, A. L. (1995). Children’s searching behavior on browsing and keyword online catalogs: the Science Library Catalog Project. Journal of the American Society for Information Science, 46 (9), 663–684.
3. Boscolo, P. (1991). Strategies of restructuring narrative and argumentative texts in elementary school children. in Carretero, M. Pope, M., Simons J. R. and Pozo J. I.(Eds.), Learning and Instruction. European Research in an International Context (pp. 293–311 ). Oxford: Pergamon Press.
4. Connolly, P. & Vilardi, T. (Eds.) (1989). Writing to learn Mathematics and Science. N.Y.: Teachers College Press.
5. Hayes, J. R., Flower, L., Scriver, K. A., Stratman, J. F. & Carey, L. (1987). Cognitive processes in revision. in S. Rosenberg (Ed.), Reading, writing and language learning (pp. 176–240 ). Cambridge, MA: Cambridge University Press.