Swan, M., & Smith, B. (2001). Learner English: A teacher's guide to interference and other problems (2nd ed.). Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSwan, Michael, और Bernard Smith. Learner English: A Teacher's Guide to Interference and Other Problems. 2nd ed. Cambridge ; New York: Cambridge University Press, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSwan, Michael, और Bernard Smith. Learner English: A Teacher's Guide to Interference and Other Problems. 2nd ed. Cambridge University Press, 2001.
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