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2. The development of a Community of Inquiry over time in an online course: Understanding the progression and integration of social, cognitive and teaching presence;∗Akyol;Journal of Asynchronous Learning Networks,2008
3. The impact of course duration on the development of a community of inquiry;Akyol;Interactive Learning Environments,2011
4. Teaching presence, social presence, and cognitive presence as predictors of students' satisfaction in an online program at a Saudi University;∗Alaulamie,2014
5. Online report card: Tacking online education in the United States;Allen,2016