Winarno, S., O. Wirjohatmodjo, H. Harijono, S. Alfinah, and W. Wirawan. “Cerebral Palsy in Y .P .A. C. (Institution for Crippled Children) Semarang”. Paediatrica Indonesiana, Vol. 16, no. 9-10, Sept. 2019, pp. 330-6, doi:10.14238/pi16.9-10.1976.330-6.