Korengkeng, Loura Caroline, and Cornelia Londok. “Pengetahuan Dan Kecemasan Pada Lansia Terhadap COVID-19”. Nutrix Journal 7, no. 1 (April 30, 2023): 25–34. Accessed November 10, 2025. https://nurturagrow.site/index.php/nutrix/article/view/926.