Swan, M., & Walter, C. (2019). Oxford English grammar course: Intermediate, a grammar practice book for intermediate and upper-intermediate students of English (Updated edition.). Oxford University Press.
Chicago Style (17th ed.) CitationSwan, Michael, and Catherine Walter. Oxford English Grammar Course: Intermediate, a Grammar Practice Book for Intermediate and Upper-intermediate Students of English. Updated edition. Oxford: Oxford University Press, 2019.
MLA (9th ed.) CitationSwan, Michael, and Catherine Walter. Oxford English Grammar Course: Intermediate, a Grammar Practice Book for Intermediate and Upper-intermediate Students of English. Updated edition. Oxford University Press, 2019.
Warning: These citations may not always be 100% accurate.