Muttaqin, Nashrotul Ummah Al, and Enny Aryanny. 2024. “Defect Analysis of Packaging Bottle Products Using Six Sigma and Kaizen Methods at PT. XYZ”. IJIEM - Indonesian Journal of Industrial Engineering and Management 5 (1). Jakarta, Indonesia:265-73. https://doi.org/10.22441/ijiem.v5i1.22420.