Hermayuni, Nova, and Alit Suwandewi. 2021. “Education Adverse Effects of Prolonged Use Masks During the Covid 19 Pandemic in Sungai Lok Baintan Luar Village”. Prosiding Pengembangan Masyarakat Mandiri Berkemajuan Muhammadiyah (Bamara-Mu) 1 (1):765-68. https://proceeding.mbunivpress.or.id/index.php/bamara/article/view/166.