Não informado. (1950). Adult Education. American Association for Adult & Continuing Education.
Chicago-Zitierstil (17. Ausg.)Não informado. Adult Education. Chapel Hill, NC: American Association for Adult & Continuing Education, 1950.
MLA-Zitierstil (8. Ausg.)Não informado. Adult Education. American Association for Adult & Continuing Education, 1950.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.