Kinasih, Angkit, Theresia P.E Sanubari, and Hidayat Hidayat. “Healthy Elderly in Pandemic: Physical Activities During The Covid-19 Pandemic”. Jurnal kesehatan komunitas (Journal of community health) 7, no. 2 (September 7, 2021): 221–225. Accessed March 29, 2024. https://jurnal.htp.ac.id/index.php/keskom/article/view/936.