SYAHRULLAH, Yudi; YANTI, April; ADHIANA, Tigar Putri; IMRAN, Rani Aulia. GAP Analysis of Higher Education Quality Assurance System Implementation Against Educational Organization Management Standards ISO 21001:2018. Operations Excellence: Journal of Applied Industrial Engineering, Jakarta, Indonesia, v. 14, n. 1, p. 67–77, 2022. DOI: 10.22441/oe.2022.v14.i1.044. Disponível em: https://training-ojs3-publikasi.mercubuana.ac.id/index.php/oe/article/view/12666. Acesso em: 28 may. 2026.