7Yujong Hwang, and Dan J. Kim. Customer self-service systems: The efleets of perceived Web quality with serviee contents on enjoyment, anxiety, and e-trust [J]. Decision Support Systems, 2006, 43 (3): 746-760.
8Yasmin B. Kafai, and Mitchel Resnick. Constructionism in Practicet Designing, Thinking and Learning in a Digital World [M]. Lawrence Erlbaum, 1996.
9Dohmen, G. Das informelle Lernen Die internationale Erschliessung einer bisher vernaehlaessigten Grundform mensehliehen I,ernens fuer das lebenslange Lernen aller [M]. Bonn: BMBF, 2001.
10Downes, S. E-learning 2.0[J]. eLearn Magazine (Online). 2006.
