Sadidah, Ai, and Ariyadi Wijaya. “Developing Mathematics Learning Set for Special-Needs Junior High School Student Oriented to Learning Interest and Achievement”. Jurnal Riset Pendidikan Matematika 3, no. 2 (November 2, 2016): 150–161. Accessed May 8, 2025. https://journal.uny.ac.id/index.php/jrpm/article/view/10866.