Praptiningrum, Nurdayati. “Pendidikan Seksual Bagi Anak Tunagrahita”. JPK (Jurnal Pendidikan Khusus) 2, no. 1 (May 15, 2006). Accessed May 9, 2025. https://journal.uny.ac.id/index.php/jpk/article/view/6041.