Mackinnon, A.R. Insistent tasks in language learning, & Frye, N. T. d. i. (1963). Learning in language and literature: Insistent tasks in language learning. Distributed for the Graduate School of Education of Harvard University by Harvard University Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Mackinnon, A.R. Insistent tasks in language learning, και Northrop. The developing imagination Frye. Learning in Language and Literature: Insistent Tasks in Language Learning. [Cambridge]: Distributed for the Graduate School of Education of Harvard University by Harvard University Press, 1963.
Παραπομπή σε μορφή MLA (9th εκδ.)Mackinnon, A.R. Insistent tasks in language learning, και Northrop. The developing imagination Frye. Learning in Language and Literature: Insistent Tasks in Language Learning. Distributed for the Graduate School of Education of Harvard University by Harvard University Press, 1963.