Elvira, Cindy, and Causa Trisna Mariedina. “The Level of Handwashing Knowledge and Behavior of Yos Sudarso High School Medan Students’ During The COVID-19 Pandemic”. Journal of Endocrinology, Tropical Medicine, and Infectious Disease (JETROMI) 3, no. 1 (February 28, 2021): 29–34. Accessed September 22, 2026. https://talenta.usu.ac.id/jetromi/article/view/5554.