IndiyantiR. (2020). Return On Asset (Roa) Analysis Using Du Pont System Method In PT. Ultrajaya Milk Industry And Trading Company Tbk” (2015-2018 Period). JIEEB nternational ournal of ntegrated ducation, ngineering and usiness ISSN 2615-1596 ISSN 2615-2312, 3(2), 94 - 103. https://doi.org/10.29138/ijieeb.v3i2.1170