Ariatin, Adrian, Wawan Dhewanto, and Oktofa Sudrajad. “Business Model in Islamic Business Unit: A Lesson from Islamic Boarding Schools in West Java”. International Journal of Applied Business Research 4, no. 1 (January 18, 2022): 32-49. Accessed July 3, 2022. https://ijabr.polban.ac.id/ijabr/article/view/193.