Febriani, I. R. ., and M. Amrullah. “Efforts of SMP Muhammadiyah 5 Reinforcement in Improving Learning Activities During the Covid-19 Pandemic: Upaya SMP Muhammadiyah 5 Tulangan Dalam Meningkatkan Aktivitas Pembelajaran Selama Pandemi Covid-19”. Proceedings of The ICECRS, vol. 10, Oct. 2021, doi:10.21070/icecrs20211168.