Liu, Xiaojing, Curt J. Bonk, Richard J. Magjuka, Seung-hee Lee, and Bude Su. “EXPLORING FOUR DIMENSIONS OF ONLINE INSTRUCTOR ROLES: A PROGRAM LEVEL CASE STUDY”. Online Learning 9, no. 4 (December 1, 2005). Accessed July 28, 2026. https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1777.