Dwidjantoro, M. I. S., and S. Sukinah. “Effectiveness of DIR/Floortime Intervention on Communication Skills Development in Elementary School Students With Autism Spectrum Disorder”. Journal of Innovation and Research in Primary Education, vol. 4, no. 4, Sept. 2025, pp. 2547-58, doi:10.56916/jirpe.v4i4.2365.