ELFANDA, M. E. IMPLEMENTATION OF SIX SIGMA IN PRODUCT QUALITY CONTROL. Jurnal Ekonomi dan Bisnis Airlangga, [S. l.], v. 31, n. 1, p. 51–63, 2021. DOI: 10.20473/jeba.V31I12021.51-63. Disponível em: https://e-journal.unair.ac.id/JEBA/article/view/26711. Acesso em: 4 aug. 2024.