APA Citation

Swan. (2005). Practical English usage (3rd ed.). Oxford: O.U.P..

Chicago Style Citation

Swan. Practical English Usage. 3rd ed. Oxford: O.U.P., 2005.

MLA Citation

Swan. Practical English Usage. 3rd ed. Oxford: O.U.P., 2005.

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