1. Learning on demand: Online education in the United States, 2009;Allen,2010
2. Assessing teaching presence in a computer conferencing transcripts;Anderson;Journal of Asynchronous Learning Networks,2001
3. Future foreign language teachers’ social and cognitive collaboration in an online environment;Arnold;Language Learning & Technology,2006
4. Student-led facilitation strategies in online discussions;Baran;Distance Education,2009
5. Ask and you will receive: how question type influences quality and quantity of online discussions;Bradley;British Journal of Educational Technology,2008