Não informado. (1991). Adult Basic Education. Commission on Adult Basic Education.
Chicago-Zitierstil (17. Ausg.)Não informado. Adult Basic Education. Atlanta, Ga: Commission on Adult Basic Education, 1991.
MLA-Zitierstil (8. Ausg.)Não informado. Adult Basic Education. Commission on Adult Basic Education, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.