Manaf, Hafizh Al-Ghifari, Muhammad Arsy Reza Suyudi, Muhammad Farraas Razaan, Venansya Maulina Praba, Shofiuddin Al Mufid, Fauziah Adhima, and Puguh Setyo Nugroho. “MEDICAL SNORKEL-MASK: A REUSABLE PERSONAL PROTECTIVE EQUIPMENT FOR HEALTH WORKERS”. Journal of Community Medicine and Public Health Research 3, no. 1 (June 21, 2022): 66–74. Accessed August 6, 2024. https://e-journal.unair.ac.id/JCMPHR/article/view/32810.