Cain, Darrell L., Chip Marrara, Paul E. Pitre, and Sabrina Armour. 2007. “Support Services That Matter: An Exploration of the Experiences and Needs of Graduate Students in a Distance Learning Environment”. International Journal of E-Learning & Distance Education Revue Internationale Du E-Learning Et La Formation à Distance 18 (1):42-56. https://ijede.ca/index.php/jde/article/view/129.