IndiyantiR. 2020. Return On Asset (Roa) Analysis Using Du Pont System Method In PT. Ultrajaya Milk Industry And Trading Company Tbk” (2015-2018 Period). IJIEEB International Journal of Integrated Education, Engineering and Business eISSN 2615-1596 pISSN 2615-2312. 3, 2 (Sep. 2020), 94 - 103. DOI:https://doi.org/10.29138/ijieeb.v3i2.1170.