Lasiana, Ninit, and Hidayatulloh Hidayatulloh. “Implementation of Total Quality Management (TQM) and Six Sigma in the Learning Process in Vocational High Schools: Implementasi Total Quality Manajemen (TQM) Dan Six Sigma Dalam Proses Pembelajaran Di Sekolah Menengah Kejuruan”. Indonesian Journal of Education Methods Development 17, no. 3 (August 31, 2022): 10.21070/ijemd.v19i.652. Accessed September 21, 2024. https://ijemd.umsida.ac.id/index.php/ijemd/article/view/652.