Trimarjoko, A., Fathurohman, D. M. H. and Suwandi, S. (2020) “Metode Value Stream Mapping dan Six Sigma untuk Perbaikan Kualitas Layanan Industri di Automotive Services Indonesia”, IJIEM - Indonesian Journal of Industrial Engineering and Management. Jakarta, Indonesia, 1(2), pp. 91–104. doi: 10.22441/ijiem.v1i2.8873.