Não informado. (1989). Adult Learning. American Association for Adult & Continuing Education.
Chicago (17e ed.) BronvermeldingNão informado. Adult Learning. Washington: American Association for Adult & Continuing Education, 1989.
MLA (8e ed.) BronvermeldingNão informado. Adult Learning. American Association for Adult & Continuing Education, 1989.
Let op: Deze citaties zijn niet altijd 100% accuraat.