Nursyahbani, Z., Sari, T. E. and Winarno, W. (2023) “Proposed Reduction of Piston Cup Forging Defects Using Fishbone Diagrams, FMEA and 5W+1H in Vehicle Spare-parts Companies”, Go-Integratif : Jurnal Teknik Sistem dan Industri, 4(01), pp. 22–32. doi: 10.35261/gijtsi.v4i01.8703.