Evi Amalia Setya Ningtyas, and Khusnuridlo. “Total Quality Management at Vocational High Schools”. Journal of Learning and Educational Policy 3, no. 05 (August 1, 2023): 30–36. Accessed July 5, 2025. https://hmjournals.com/journal/index.php/JLEP/article/view/2441.