1. Anderson, T. (2005). Distance learning—Social software’s killer ap? Retrieved on 25 September 2012 from http://auspace.athabascau.ca/handle/2149/2328.
2. Brady, K.P., Holcomb, L.B., & Smith, B.V. (2010). The use of alternative social networking sites in higher educational settings: a case study of the e-learning benefits of Ning in education. Journal of Interactive Online Learning. 9(2), 151 -170.
3. Doering, A. & Veletsianos, G. (2008). Hybrid online education: Identifying integration models using adventure learning. Journal of Research on Technology in Education, 41(1), 101 -119.
4. Dron, J. & Anderson, T. (2009). Lost in social space: Information retrieval issues in Web 1.5. Journal of Digital Information, 10(2), 1 -12
5. Effandi, Z. & Zanaton, I. (2007). Promoting cooperative learning in science and mathematics education: A Malaysia Perspective. Eurasia Journal of Mathematics, Science & Technology Education, 3(1), 35-39.