Pressley Ridge School, West Virginia University, & California State College (Pa.). Education & treatment of children. Pressley Ridge School.
Chicago-referens (17:e uppl.)Pressley Ridge School, West Virginia University, och California State College (Pa.). Education & Treatment of Children. Pittsburgh, Pa.: Pressley Ridge School.
MLA-referens (9:e uppl.)Pressley Ridge School, et al. Education & Treatment of Children. Pressley Ridge School.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.