APA (7th ed.) Citation

SWAN, M. (1983). Practical english usage. Oxford University Press.

Chicago Style (17th ed.) Citation

SWAN, Michael. Practical English Usage. Oxford: Oxford University Press, 1983.

MLA (9th ed.) Citation

SWAN, Michael. Practical English Usage. Oxford University Press, 1983.

Warning: These citations may not always be 100% accurate.