Hartono, D. A., and S. Sumiati. “Analysis of Defect Reduction in Bone Screw Production Using Six Sigma and TRIZ Methods : Analisis Pengurangan Tingkat Cacat Pada Produksi Bone Screw Dengan Metode Six Sigma Dan Triz”. Indonesian Journal of Innovation Studies, vol. 26, no. 4, July 2025, p. 10.21070/ijins.v26i4.1583, doi:10.21070/ijins.v26i4.1583.