Conrad, D. (2009). Cognitive, Instructional, and Social Presence as Factors in Learners’ Negotiation of Planned Absences from Online Study. Athabasca University Press.
Cita Chicago Style (17a ed.)Conrad, Dianne. Cognitive, Instructional, and Social Presence as Factors in Learners’ Negotiation of Planned Absences from Online Study. Athabasca University Press, 2009.
Cita MLA (8a ed.)Conrad, Dianne. Cognitive, Instructional, and Social Presence as Factors in Learners’ Negotiation of Planned Absences from Online Study. Athabasca University Press, 2009.
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