Não informado. (1970). Literacy discussion. International Institute for Adult Literacy Methods.
Chicago-referens (17:e uppl.)Não informado. Literacy Discussion. Teheran: International Institute for Adult Literacy Methods, 1970.
MLA-referens (8:e uppl.)Não informado. Literacy Discussion. International Institute for Adult Literacy Methods, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.