Gustawan, I Wayan, Soetjiningsih Soetjiningsih, and Soeroyo Machfudz. “Validity of Parents’ Evaluation of Developmental Status (PEDS) in Detecting Developmental Disorders in 3-12 Month Old Infants”. Paediatrica Indonesiana 50, no. 1 (March 3, 2010): 6-10. Accessed April 19, 2024. https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/149.