Savitri, Bragi Anestasya, AND 		Handayani, Anita.
" Analysis  of Quality Cost Optimization at PT. XYZ in Gresik Regency" <em>Journal Universitas Muhammadiyah Gresik Engineering, Social Science, and Health International Conference (UMGESHIC)</em> [Online], Volume 2 Number 1 (10 January 2023)