Não informado. (1977). Adult Literacy & Basic Education. Comission on Adult Basic Education.
Chicago-referens (17:e uppl.)Não informado. Adult Literacy & Basic Education. Auburn, Ala: Comission on Adult Basic Education, 1977.
MLA-referens (8:e uppl.)Não informado. Adult Literacy & Basic Education. Comission on Adult Basic Education, 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.
