Ditahardiyani, P., Ratnayani, R., & Angwar, M. (2009). THE QUALITY IMPROVEMENT OF PRIMER PACKAGING PROCESS USING SIX SIGMA METHODOLOGY. Jurnal Teknik Industri: Jurnal Keilmuan Dan Aplikasi Teknik Industri, 10(2), 177-184. https://doi.org/10.9744/jti.10.2.177-184