Não informado. (1964). Programmed learning. Association for Programmed Learning.
Style de citation Chicago (17e éd.)Não informado. Programmed Learning. London: Association for Programmed Learning, 1964.
Style de citation MLA (8e éd.)Não informado. Programmed Learning. Association for Programmed Learning, 1964.
Attention : ces citations peuvent ne pas être correctes à 100%.