1. Blumer, H., Symbolic Interaction ism: Perspectives and method, Englewood Cliffs, NJ: Prentice Hall 1969
2. Clark, K., a. o., Integrating Mathematics, Science, and Language Arts Instruction Using The World Wide Web, Journal of Computers in Mathematics and Science Teaching (1998), 17 (4), 295–309
3. Collins, M., The Use of Email and Electronic Bulletin Boards in College-Level Biology, Journal of Computers in Mathematics and Science Teaching (1998), 17 (1), 75–94
4. Comenius, J. A., Große Didaktik, Hrsg von A. Flitner, Dusseldorf u. München 19704
5. D’Souza, P. V., Email’s role in the learning process: A case study, Journal of Research on Computing in Education, 25 (1992), 254–264