Bernadetha Nadeak (2020) “The Effectiveness of Distance Learning Using Social Media during the Pandemic Period of COVID-19: A Case in Universitas Kristen Indonesia”, International Journal of Advanced Science and Technology, 29(7), pp. 1764 - 1772. Available at: http://sersc.org/journals/index.php/IJAST/article/view/16270 (Accessed: 26April2024).