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Sutiyono, Agus Zaenul Fitri, As’aril Muhajir. Model Of A Quality Assurance System Based On ISO 21001:2018 And Its Application In Education. IJEMR [Internet]. 2025 Jul. 21 [cited 2025 Oct. 26];2(2):126-40. Available from: https://journal.as-salafiyah.id/index.php/ijemr/article/view/327