Dewi, Septaliza. 2021. “SURVEY OF THE PHYSICAL FITNESS OF MENTALLY RETARDED CHILDREN: Survey Of The Physical Fitness Of Mentally Retarded Children”. JIPES - JOURNAL OF INDONESIAN PHYSICAL EDUCATION AND SPORT 7 (01):69-75. https://journal.unj.ac.id/unj/index.php/jipes/article/view/20994.