DAGAN, D. Upaya Meningkatkan Disiplin Guru Melalui Sistem Reward And Funishment Guna Menunjang Efektivitas Proses Belajar Mengajar Di SD Negeri Tumbang Kalemei: Efforts to Improve Teacher Discipline through a Reward and Funishment System to Support the Effectiveness of the Teaching and Learning Process at SD Negeri Tumbang Kalemei. Tunas: Jurnal Pendidikan Guru Sekolah Dasar, v. 6, n. 1, p. 1–7, 30 Dec.2020.