Não informado. (1948). Language Learning. Research Club in Language Learning.
Style de citation Chicago (17e éd.)Não informado. Language Learning. Ann Arbor, Mich: Research Club in Language Learning, 1948.
Style de citation MLA (8e éd.)Não informado. Language Learning. Research Club in Language Learning, 1948.
Attention : ces citations peuvent ne pas être correctes à 100%.