“PERAN KOPERTAIS IX DALAM PEMBINAAN MUTU PERGURUAN TINGGI AGAMA ISLAM DI SUMATERA UTARA: THE ROLE OF KOPERTAIS REGION IX IN THE QUALITY DEVELOPMENT OF ISLAMIC HIGHER EDUCATION INSTITUTIONS IN NORTH SUMATERA”. 2017. Penamas 27 (1): 79-94. https://penamas.kemenag.go.id/penamas/article/view/67.