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2. Principles of Language Learning and Teaching;Brown,1994
3. Teaching by Principles: An Interactive Approach to Language Pedagogy;Brown,1994
4. Twenty-five years of research on foreign language aptitude;Carroll,1981
5. Carver, D., Dickinson, L., 1982. Learning to be self-directed. In: Geddes, M., Sturtridge, G. (Eds.), Individualisation. Modern English Publications, Oxford.