Spencer, B. (2008) “Removing Barriers and Enhancing Openness: Distance Education as Social Adult Education”, International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, 10(2), pp. 87–104. Available at: https://www.ijede.ca/index.php/jde/article/view/237 (Accessed: 23 May 2025).