Não informado. (1929). Journal of Adult Education. American Association for Adult Education.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of Adult Education. New York: American Association for Adult Education, 1929.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of Adult Education. American Association for Adult Education, 1929.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.