Azizah, Y., and Muhammad Yunus. “Education On How To Increase Endurance During The Covid-19 Pandemic And Distribution Of Immune Supplements”. Prosiding Pengembangan Masyarakat Mandiri Berkemajuan Muhammadiyah (Bamara-Mu), vol. 1, no. 1, Sept. 2021, pp. 895-8, https://proceeding.mbunivpress.or.id/index.php/bamara/article/view/187.