Não informado. (1929). Journal of Adult Education. American Association for Adult Education.
Chicago-referens (17:e uppl.)Não informado. Journal of Adult Education. New York: American Association for Adult Education, 1929.
MLA-referens (8:e uppl.)Não informado. Journal of Adult Education. American Association for Adult Education, 1929.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.