Creating collaborative e-learning environments

The outline of literature review:

1-What is e-learning?
2-What is the principle of e-learning?
3-What are the advantages and disadvantages for using e-learning?
4-What are the difficulties faced when using the e-learning? (Differences of collaborative e-learning)
5-What is collaborative e-learning? Why we need it?
6-What is the best technology supporting collaborative e-learning?

” Bibliography (References in APA).
Al-Jarf, R. Cultural Issues in Online Collaborative Instruction i EFL Cl in EFL Classrooms.
Conway, J. (1997). Educational Technologys Effect on Models of Instruction. En ligne: ed.
El Mansour, B., & Mupinga, D. M. (2007). Students Positive and Negative Experiences in Hybrid and Online Classes. College Student Journal, 41(1), 242-2487.
Furumo, K., & Melcher, A. (2006). The Importance of Social Structure in Implementing ERP Systems: A Case Study using Adaptive Structuration Theory. JOURNAL OF INFORMATION TECHNOLOGY CASES AND APPLICATIONS, 8(2), 39.
Hooper, S. (1992). Collaborative learning and computer based instruction. Educational Technology Research and Development, 40 (3).
Inaba, A., & Okamoto, T. (1997). The Intelligent Discussion Coordinating System for Effective Collaborative Learning. Proceedings of the IV Collaborative Learning Workshop in the 8 thWorld Conference on Artificial Intelligence in Education, Kobe, Japَn.
Lawless, N., & Allan, J. (2004). Understanding and reducing stress in collaborative e-Learning. Electronic Journal on e-Learning Volume, 2(1), 121-128.
Liaw, S., & Huang, H. (2007). Developing a Collaborative e-Learning System Based on Users Perceptions. LECTURE NOTES IN COMPUTER SCIENCE, 4402, 751.
McMurray, A., Pace, R. W., & Scott, D. (2004). Research: A Commonsense Approach: Thomson Learning Nelson.
Okamoto, T. (2003). E-collaborative learning technologies and e-pedagogy. Advanced Learning Technologies, 2003. Proceedings. The 3rd IEEE International Conference on, 516-517.
Romero, C., Ventura, S., & Gagliano, R. (2006). Data Mining in E-Learning. Ubiquity, 7(30).
Tomsic, A., & Suthers, D. D. (2006). Discussion Tool Effects on Collaborative Learning and Social Network Structure. Aims and Scope, 9(4), 63-77.
Wu, H. (2002). Designing a Reusable and Adaptive E-Learning System. University of Saskatchewan.