Leton SI, Lakapu M, Dosinaeng WBN. Mathematical problem-solving abilities of deaf student in solving non-routine problems. Math Didactic [Internet]. 25 Juli 2019 [dikutip 9 Juli 2025];5(2):157-6. Tersedia pada: https://jurnal.stkipbjm.ac.id/index.php/math/article/view/538