Trim, J. L. M. (1980). Systems development in adult language learning: A European unit credit system for modern language learning by adults. Oxford [etc.]: Pergamon press.
Citación estilo ChicagoTrim, J. L. M. Systems Development in Adult Language Learning: A European Unit Credit System for Modern Language Learning By Adults. Oxford [etc.]: Pergamon press, 1980.
Cita MLATrim, J. L. M. Systems Development in Adult Language Learning: A European Unit Credit System for Modern Language Learning By Adults. Oxford [etc.]: Pergamon press, 1980.
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