Não informado. (1991). Adult Basic Education. Commission on Adult Basic Education.
Citação do estilo Chicago (17ª ed.)Não informado. Adult Basic Education. Atlanta, Ga: Commission on Adult Basic Education, 1991.
Citação MLA (8ª ed.)Não informado. Adult Basic Education. Commission on Adult Basic Education, 1991.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.