Cita APA
Swan, M. (2016). Practical english usage (4th ed.). Oxford University Press.
Citación estilo Chicago
Swan, Michael. Practical English Usage. 4th ed. United Kingdom: Oxford University Press, 2016.
Cita MLA
Swan, Michael. Practical English Usage. 4th ed. Oxford University Press, 2016.
Warning: These citations may not always be 100% accurate.