Savitri, B.A. and Handayani, A. 2023. Analysis of Quality Cost Optimization at PT. XYZ in Gresik Regency. Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC). 2, 1 (Jan. 2023), 52–62. DOI:https://doi.org/10.30587/umgeshic.v2i1.5118.