Comparison of the Picture Exchange Communication System and a Speech Generating Device (iPad) to Improve Requesting Skills of Children with Autism 論文 Xu Wang・Taro Amagai・Sungha Cho・Hong Pei・Shigeki Sonoyama ·2021 ·『Journal of Special Education Research』 9(2) pp. 35-47 doi:10.6033/specialeducation.9.35