Böke, Hulusi. “On the Health of Staff of the Provincial Directorate of Youth and Sports During the COVID-19 Epidemic: Researching the Levels of Physical Activity and Social Media Addiction”. Progress in Nutrition 23, no. S2 (September 16, 2021): e2021259. Accessed August 17, 2024. https://mattioli1885journals.com/index.php/progressinnutrition/article/view/11942.