Bozkurt, Aras, and Olaf Zawacki-Richter. “Trends and Patterns in Distance Education (2014–2019): A Synthesis of Scholarly Publications and a Visualization of the Intellectual Landscape”. The International Review of Research in Open and Distributed Learning 22, no. 2 (January 18, 2021): 19–45. Accessed April 19, 2024. https://www.irrodl.org/index.php/irrodl/article/view/5381.