Wahyuni, S. T., and R. Nurmeidina. “Introducing Google Classroom As Online Learning Application During Covid-19 Pandemic”. Prosiding Pengembangan Masyarakat Mandiri Berkemajuan Muhammadiyah (Bamara-Mu), vol. 1, no. 1, Sept. 2021, pp. 612-5, https://proceeding.mbunivpress.or.id/index.php/bamara/article/view/226.