Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "園山, 繁樹 and Sonoyama, Shigeki",Gradual Forced Attendance Techniques in the Early Treatment of School Refusal,Journal of Chugoku Junior College,0914-1227,中国短期大学,1991-06-16,22,,191-201,https://cir.nii.ac.jp/crid/1050001202807541888,