Heryana, Samudra Eka Cipta. “EXISTENCE OF SALAFIYYAH ISLAMIC BOARDING SCHOOL IN THE MIDDLE ERA OF INDUSTRIAL REVOLUTION 4.0”. OISAA Journal of Indonesia Emas 3, no. 2 (June 15, 2020): 38-44. Accessed May 16, 2024. https://ejournal.ppi.id/index.php/oisaa/article/view/6.