Swan, M., & Walter, C. (2012). Oxford English grammar course: Basic : a grammar practice book for elementary to pre-intermediate students of English with answers. Oxford University Press.
শিকাগো স্টাইলে সাইটেশনSwan, Michael, এবং Catherine Walter. Oxford English Grammar Course: Basic : A Grammar Practice Book for Elementary to Pre-intermediate Students of English with Answers. New Delhi: Oxford University Press, 2012.
এমএলএ সাইটেশনSwan, Michael, এবং Catherine Walter. Oxford English Grammar Course: Basic : A Grammar Practice Book for Elementary to Pre-intermediate Students of English with Answers. Oxford University Press, 2012.
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