Hanif, A., F. Fery, and C. Raheni. “The Role of Muhammadyah Volunteers in Helping Micro Businesses in Sirenja Subdistrict, Donggala Regency, Central Sulawesi Province to Stay in the Middle of the Covid-19 Pandemic Crisis”. International Journal of Health, Economics, and Social Sciences (IJHESS), Vol. 2, no. 4, Oct. 2020, pp. 248-51, doi:10.56338/ijhess.v2i4.1411.