Yunardi. “COMPARISON OF KNOWLEDGE BEFORE AND AFTER COUNSELING ABOUT HANDWASHING DURING THE COVID-19 PANDEMIC IN ELDERLY SOCIAL SERVICES”. MEDALION Journal: Medical Research, Nursing, Health and Midwife Participation 1, no. 1 (March 31, 2020): 17–22. Accessed June 10, 2026. https://medalionjournal.com/index.php/go/article/view/10.