Cita APA

Swan, M., & Michael Swan. (2005). Practical English Usage. Oxford: Oxford University Press.

Chicago Style Citation

Swan, Michael, i Michael Swan. Practical English Usage. Oxford: Oxford University Press, 2005.

Cita MLA

Swan, Michael, i Michael Swan. Practical English Usage. Oxford: Oxford University Press, 2005.

Atenció: Aquestes cites poden no estar 100% correctes.