Sulartopo S, Manongga D, Nugraha A. Internal Qualiy Assurance of Higher Education Using a Soft Systems Methodology Approach. IJSBAR [Internet]. 2021 Jun. 7 [cited 2024 Apr. 29];58(2):206-23. Available from: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/12664