Dr. Sarmadan Nur Siregar (2021) “NAHDLATUL ULAMA AND IT’S ROLE IN THE DEVELOPMENT OF ISLAMIC RELIGIOUS EDUCATION IN CENTRAL TAPANULI”, Researchers World - International Refereed Social Sciences Journal, 8(2(1), pp. 92–103. Available at: https://researchersworld.com/index.php/rworld/article/view/280 (Accessed: 14 July 2025).