Dedy Khaerudin, Ganjar Sidik Gandara, Budiharjo Budiharjo, and Irma Nurmala Dewi, “Implementation of Six Sigma to Reduce Defects In Batik Cap Products To Maximize Production Capacity : Case Study: PT. Batik Banten Mukarnas”, ICEEI, vol. 1, no. 2, pp. 71–84, Jan. 2025.