Storandt, Barbara C., Lia C. Dossin, and Anna Piacentini Lacher. “Toward an Understanding of What Works in Professional Development for Online Instructors: The Case of PBS Teacherline”. Online Learning 16, no. 2 (March 31, 2012). Accessed March 25, 2026. https://olj.onlinelearningconsortium.org/index.php/olj/article/view/216.