Septiani, E., Pujiyanto, E., & Hisjam, M. (2020). A Design to Improve the Quality of OVO Electronic Money Payment Services in Tokopedia using IPA and PGCV. Jurnal Teknik Industri, 21(2), 153–162. https://doi.org/10.22219/JTIUMM.Vol21.No2.153-162