Ichikado Keiko, Maruyama Masakazu, Sonoda Yujiro. Remedial Methods and Early Intervention Programs for Autistic Children in Japan. Visio. 1997. 24. 147-156
Sonoda Yujiro, Hiraishi Ayaka. The Application of Music Therapy to an Emotionally Disabled Child (I). Visio. 1997. 24. 225-234
Remedial Methods and Early Intervention Program for Autistic Children in Japan. Kyushu Lutheran College Research Reports. 1997. 24. 147-156
The Application of Music Therapy to an Emotionally Disabled Child(1). Kyushu Lutheran College Research Reports. 1997. 24. 225-234