Swan,Michael, & Smith,Bernard. (2001). Learner English: A teacher's guide to interference and other problems. Cambridge: Cambridge university press.
Chicago-стиль цитированияSwan,Michael, and Smith,Bernard. Learner English: A Teacher's Guide to Interference and Other Problems. Cambridge: Cambridge university press, 2001.
MLA-цитированиеSwan,Michael, and Smith,Bernard. Learner English: A Teacher's Guide to Interference and Other Problems. Cambridge: Cambridge university press, 2001.
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