Tofik Hidayat, Zulfah, and Dwi Nurhidayani. “Analisis Gap Penerapan Sistem Manajemen Mutu 9001:2015 PT. Gaya Teknik Logam”. Journal of Research and Technology, vol. 8, no. 1, Aug. 2022, pp. 109-20, doi:10.55732/jrt.v8i1.642.