Tiwari, Ram, and Arvind Tiwari. “E-Learning: An Effective Tool for Open and Distant Learning”. Anusandhaan - Vigyaan Shodh Patrika 5, no. 01 (October 10, 2017): 196-198. Accessed March 22, 2026. https://anushandhan.in/index.php/ANSDHN/article/view/1240.