Olsen, A. E. (2005). Active vocabulary: General and academic words. London / New York: Pearson Education.
استشهاد بنمط شيكاغوOlsen, Amy E. Active Vocabulary: General and Academic Words. London / New York: Pearson Education, 2005.
MLA استشهادOlsen, Amy E. Active Vocabulary: General and Academic Words. London / New York: Pearson Education, 2005.
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