“PEMANFAATAN E-COMMERCE BUSINESS TO CONSUMER (B2C) MARKETPLACE UNTUK PENGEMBANGAN USAHA MIKRO,KECIL DAN MENENGAH (UMKM)”. 2020. JKIE (Journal Knowledge Industrial Engineering) 7 (1): 1-10. https://doi.org/10.35891/jkie.v7i1.2092.