Suparno, Hamim, M. I. ., & Prasetiawan, H. (2016). ANALISIS PENGENDALIAN KUALITAS PRODUKSI BOGIE BARBER S2HD9C MENGGUNAKAN METODE LEAN SIX SIGMA DI PT BARATA INDONESIA (PERSERO) GRESIK . Journal of Research and Technology, 2(2), 32–46. https://doi.org/10.55732/jrt.v2i2.235