Benson, P., & Voller, P. (1997). Autonomy and independence in language learning. Longman.
Chicago Style (17. basım) AtıfBenson, Phil, ve Peter Voller. Autonomy and Independence in Language Learning. New York: Longman, 1997.
MLA (8th ed.) AtıfBenson, Phil, ve Peter Voller. Autonomy and Independence in Language Learning. Longman, 1997.
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