Anderson, Terry. “Toward a Theory of Online Learning.” Theory and Practice of Online Learning. Anderson, Terry & Elloumi, Fathi, Eds. Athabasca University, 2004. http://cde.athabascau.ca/online_book/ch2.html (23 February 2006).

Riel, Margaret. “New Designs for Connected Teaching and Learning.” U.S. Dept. of Education: Secretary’s Conference on Educational Technology. September 2000. http://gsep.pepperdine.edu/~mriel/office/papers/whitepaper/learn2.html (23 February 2006).