Maulana, F., and Hendera. “Introduction Of BUDAMBER To Help Improve The Economy During The Covid-19 Pandemic”. Prosiding Pengembangan Masyarakat Mandiri Berkemajuan Muhammadiyah (Bamara-Mu), vol. 1, no. 1, Sept. 2021, pp. 604-7, https://proceeding.mbunivpress.or.id/index.php/bamara/article/view/159.