Ashma Shamail, and Shanti Rekha Rao. “COVID-19 and Lockdown: Anxiety Levels and Sleep Difficulties Among School Students in Saudi Arabia”. Pegem Journal of Education and Instruction 13, no. 2 (November 1, 2023): 386–394. Accessed August 1, 2025. https://pegegog.net/index.php/pegegog/article/view/2877.