APA Citation

Swan. (2002). Practical English usage (2nd ed.). Oxford: O.U.P..

Chicago Style Citation

Swan. Practical English Usage. 2nd ed. Oxford: O.U.P., 2002.

MLA Citation

Swan. Practical English Usage. 2nd ed. Oxford: O.U.P., 2002.

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