Não informado. (1978). The Journal for Vocational Special Needs Education. National Association of Vocational Education Special Needs Personnel.
Chicago-referens (17:e uppl.)Não informado. The Journal for Vocational Special Needs Education. Denton, Tex: National Association of Vocational Education Special Needs Personnel, 1978.
MLA-referens (8:e uppl.)Não informado. The Journal for Vocational Special Needs Education. National Association of Vocational Education Special Needs Personnel, 1978.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.