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Siswadi A, Sudrajat J, Afandi RDS, Dahlan R, Khori A. Implementation of Internal Quality Assurance System Policy and its Impact on School Performance: A Case Study at SDIT Aya Sophia Islamic School. ijosmas [Internet]. 2025Jun.29 [cited 2025Nov.8];6(3):60-6. Available from: https://www.ijosmas.org/index.php/ijosmas/article/view/483