Nugraha, R. fizri, Hady Sofyan and Afif Fawa Idul Fata (2024) “Product Quality Control Using Six-Sigma Method and Failure Mode and Effect Analysis at Core Board Purwakarta Company”, Jurnal Teknologika, 14(2), pp. 508-517. doi: 10.51132/teknologika.v14i2.389.