Não informado. (1970). Planning & Changing. Illinois State University, Department of Educational Administration.
Chicago-referens (17:e uppl.)Não informado. Planning & Changing. Normal, Ill: Illinois State University, Department of Educational Administration, 1970.
MLA-referens (8:e uppl.)Não informado. Planning & Changing. Illinois State University, Department of Educational Administration, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.