Jayanti, Ida, and Wuri Rahmawati. “Tingkat Pemahaman Lansia Mengenai Pesan Protokol Kesehatan Covid-19”. Prosiding University Research Colloquium (May 27, 2021): 1047–1053. Accessed April 29, 2025. https://repository.urecol.org/index.php/proceeding/article/view/1517.