Bhatti, Dr. Muhammad Tariq, and Dr. Roshan Ali Teevno. “Nonverbal Communication (NVC) and Teacher Presence in Collaborative Online Learning”. The journal of contemporary issues in business and government 27, no. 6 (December 30, 2021): 308–316. Accessed July 17, 2024. https://cibgp.com/au/index.php/1323-6903/article/view/2184.