Motie, Mahdieh, Reza Dehnavieh, and Khalil Kalavani. “Increasing the Effectiveness of Virtual Learning During COVID-19”. Archives of Community Medicine and Public Health 6, no. 2 (August 11, 2020): 174–175. Accessed August 15, 2025. https://www.healthdisgroup.com/acmph/article/view/ACMPH-6-200.