Hiltz, Starr Roxanne, Nancy Coppola, Naomi Rotter, Murray Turoff, and Raquel Benbunan-Fich. “Measuring the Importance of Collaborative Learning for the Effectiveness of ALN: A Multi-Measure, Multi-Method Approach”. Online Learning 4, no. 2 (March 19, 2019). Accessed March 25, 2026. https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1904.