Onny Fitriana Sitorus. The Importance of Cognitive Ability for Chair of Study Programs in Muhammadiyah University: Urgensi Kepemilikan Kemampuan Kognitif Keprodian Bagi Ketua Program Studi Di Perguruan Tinggi Muhammadiyah. ijemd [Internet]. 2019 Aug. 19 [cited 2025 Jun. 15];7:10.21070/ijemd.v5i1.41. Available from: https://ijemd.umsida.ac.id/index.php/ijemd/article/view/41