Não informado. (1980). AACTE Briefs. American Association of Colleges for Teacher Education.
Chicago-referens (17:e uppl.)Não informado. AACTE Briefs. Washington: American Association of Colleges for Teacher Education, 1980.
MLA-referens (8:e uppl.)Não informado. AACTE Briefs. American Association of Colleges for Teacher Education, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.