Ambarita CF. PENGARUH SIKAP PROFESIONAL GURU WALI KELAS TERHADAP KEBERHASILAN PROSES PEMBELAJARAN SISWA KELAS 1 DI SD RK BUDI MURNI 6 MEDAN. JH [Internet]. 2018 Aug. 20 [cited 2025 Jan. 31];9(1). Available from: http://103.242.233.34/index.php/handayani/article/view/10516