6Felmlee, D.. Interaction in Social Networks[A] . Delamater, J.. Handbook of Social Psychology [C] . New York: Kluwer Academic/ Plenum Publishers, 2003.389-409.
7Haythomthwaite, C.. Social Network Methods and Measures for Examining E-learning[DB/OL] . http://www.wun.ac.uk/elearning/seminars/seminars/serninar_two/papers/haythomthwaite.pdf.
8Wasserman, S.,Faust, K.. Social Network Analysis: Methods and Applications [M]. Cambridge,U.K.: Cambridge University Press, 1994.
9Huisman, M., & Duijn, M.AJ. van, Software for social network analysis[A]. PJ. Carrington, J. Scott & S. Wasserman. Models and methods in social network analysis[C]. New York: Cambridge University Press, 2005. 270-316.
10Woods, R.H., & Ebersole, S., . Social Networking in the Online Classroom:Foundations of Effective Online Leaming[J].EJournal . 2003(12-13),1. http://www.acs.ucalgary.ca/ejoumal/archive/ v12-13/v12-13n1 Woods-print.html.