suyitno S. The implementation of quality management system using ISO 9001:2008 based Total Quality Management Concept (Case Study at the First State Public Vocational Secondary School at Singosari, Malang Regency, East Java, Indonesia). JSS [Internet]. 2018Jan.1 [cited 2024May5];7(1):15-27. Available from: https://centreofexcellence.net/index.php/JSS/article/view/2018.7.1.15.27