1. Atkinson, R. C. & Shiffin, R. M. (1968). Human memory: A proposed system and its control processes. In K. W. Spense & J. T. Spense (Eds.),The psychology of learning and motivation: Advances in research and theory, Vol. 2 (pp. 89–195). New York: Academic Press.
2. Baddeley, A. D. & Hitch, G. J. (1974). Working memory. In G.H. Bower (Ed.),The psychology of learning and motivation, Vol 8. (pp. 47–89). New York: Academic Press.
3. Baddeley, A. D. & Lieberman K. (1980). Spatial working memory. In R. Nickerson (Ed.),Attention and performance VIII (pp. 521–539). Hillsdale, NJ: Erlbaum.
4. Brown, J.S., Collins, A., & Duguid. (1989). Situated cognition and the culture of learning.Educational Researcher, 18(1), 32–42.
5. Collins, A., Brown, J.S., & Newman, D. (1989). Cognitive apprenticeship: Teaching the craft of reading, writing, and mathematics. In L. Resnick (Ed.),Knowing, learning, and instruction: Essays in honor of Robert Glaser (pp. 453–494). Hillsdale, NJ: Lawrence Erlbaum Associates.