A Yanuar, A, W Sutari, and R Ruyan. “The Implementation of ISO 9001 Certification to Improve the Competitive Advantage of Private Higher Education”. Proceeding Interuniversity Forum for Strengthening Academic Competency 1, no. 1 (May 29, 2019): 258 - 265. Accessed March 28, 2024. http://proceedings.conference.unpas.ac.id/index.php/ifsac/article/view/165.