APA (7th ed.) Citation
Swan, M. (2016). Practical English Usage (Fourth Edition.). Oxford University Press.
Chicago Style (17th ed.) Citation
Swan, Michael. Practical English Usage. Fourth Edition. Oxford: Oxford University Press, 2016.
MLA (9th ed.) Citation
Swan, Michael. Practical English Usage. Fourth Edition. Oxford University Press, 2016.
Warning: These citations may not always be 100% accurate.