Imam, Mashur, and Abdullah. “Service Quality Dalam Membangun Competitive Advantage Di Pondok Pesantren Nurul Jadid”. Nusantara Journal of Islamic Studies 3, no. 2 (September 20, 2022): 167-186. Accessed May 7, 2024. https://ejournal.kopertais4.or.id/tapalkuda/index.php/NJIS/article/view/4929.