Akib I, Husniati A, Kusumah F, Kristiawati K, Fayanto S. Thinking Processes of Mentally retarded: Students Disabled at Junior High School in Solving Fractions Problems. Alishlah [Internet]. 2022 Jun. 15 [cited 2026 Oct. 13];14(2):2185-96. Available from: https://www.alishlah.ahfpublishing.id/alishlah/article/view/1773