Ahmad Sopian, H. Ahmad Syukri and H. Kasful Anwar. US (2021) “KYAI’S SPIRITUAL LEADERSHIP MODEL ON INCREASING PRODUCTIVITY OF ISLAMIC BOARDING SCHOOL EDUCATION IN SOUTH SUMATERA”, European Journal of Humanities and Educational Advancements, 2(10), pp. 110-115. Available at: https://scholarzest.com/index.php/ejhea/article/view/1323 (Accessed: 29March2024).