AHMAD TAJUDIN, Mohd Khairil Amri; NURUL HUDA JUWAINI. Studies On Customer Service Quality Management In Schools Using The DMAIC. Jurnal Kejuruteraan, Teknologi and Sains Sosial (JKTSS), [S. l.], v. 7, n. 3, 2024. Disponível em: https://jktss.puo.edu.my/jurnalpuo/index.php/jurnal/article/view/89. Acesso em: 10 jan. 2025.