Nubatonis WT, Permana S. The Professionalism Of Teachers In Public Elementary School State Of West Perak, VI No 494, Dolphin Street No. 29 City Of Surabaya. Christian Education [Internet]. 2021 Oct. 28 [cited 2026 Nov. 7];4(2):1-7. Available from: https://jurnal.sttii-surabaya.ac.id/index.php/didaskalia/article/view/214