Rambe, Abdul M., Amir Syarifuddin, and Bistok Saing. “Intelligence Level in Children With Cerebral Palsy (CP) at YPAC Medan”. Medical Journal of Indonesia 11, no. 4 (November 1, 2002): 242-45. Accessed October 10, 2024. http://mji.ui.ac.id/journal/index.php/mji/article/view/79.