APA (7e ed.) Bronvermelding

Não informado. (1964). Programmed learning. Association for Programmed Learning.

Chicago (17e ed.) Bronvermelding

Não informado. Programmed Learning. London: Association for Programmed Learning, 1964.

MLA (8e ed.) Bronvermelding

Não informado. Programmed Learning. Association for Programmed Learning, 1964.

Let op: Deze citaties zijn niet altijd 100% accuraat.