Bishop, J. (2009). Enhancing the understanding of genres of web-based communities: The role of the ecological cognition framework. International Journal of Web-Based Communities, 5(1), 4-17. Available onlineLưu trữ 2017-04-22 tại Wayback Machine
Cook, A.D. (2009). A case study of the manifestations and significance of social presence in a multi-user virtual environment. MEd Thesis. Available onlineLưu trữ 2011-07-06 tại Wayback Machine
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Bishop, J. (2009). Enhancing the understanding of genres of web-based communities: The role of the ecological cognition framework. International Journal of Web-Based Communities, 5(1), 4-17. Available onlineLưu trữ 2017-04-22 tại Wayback Machine
Cook, A.D. (2009). A case study of the manifestations and significance of social presence in a multi-user virtual environment. MEd Thesis. Available onlineLưu trữ 2011-07-06 tại Wayback Machine