Australasian Journal of Educational Technology, vol. 28, no. 6, page. 965 - 982, 2012-08
Asia-Pacific Education Researcher, vol. 21, no. 1, page. 51 - 62, 2012-02
Computers & Education, vol. 59, no. 4, page. 1234 - 1245, 2012-12
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