Putra, E.M. et al. 2020. Analisa defect produk sheet area corrugator 301 menggunakan metode SPC dan FMEA di PT Indah Kiat. Operations Excellence: Journal of Applied Industrial Engineering. 12, 3 (Nov. 2020), 332–343. DOI:https://doi.org/10.22441/oe.2020.v12.i3.006.