Imaduddin MH, Febriyana N, Setiawati Y, Irwanto I. Risk Factor Mild Mental Retardation in Extraordinary School at Surabaya. JPS [Internet]. 2020 Sep. 23 [cited 2024 Nov. 21];9(2):34-45. Available from: https://e-journal.unair.ac.id/JPS/article/view/20039