Cita APA

Swan, M. (2003). Practical English usage (Fifth impression.). Oxford University Press.

Citación estilo Chicago

Swan, Michael. Practical English Usage. Fifth impression. Oxford ; New York: Oxford University Press, 2003.

Cita MLA

Swan, Michael. Practical English Usage. Fifth impression. Oxford University Press, 2003.

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