Rahmita, Aulia, and Ahmad Kailani. 2021. “The Role of Optimism in Maintaining Mental Health of Society During The Pandemic Covid-19”. Prosiding Pengembangan Masyarakat Mandiri Berkemajuan Muhammadiyah (Bamara-Mu) 1 (1):1048-51. https://proceeding.mbunivpress.or.id/index.php/bamara/article/view/124.