Lasiana, Ninit, and Hidayatulloh Hidayatulloh. 2022. “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 (3), 10.21070/ijemd.v19i.652. https://doi.org/10.21070/ijemd.v19i.652.