Cita APA (7th ed.)

Radford, A., Atkinson, M., Britain,David, Harald, C., & Spencer, A. (1999). Linguistics: An introduction. Cambridge University Press.

Cita Chicago (17th ed.)

Radford, Andrew, Martin Atkinson, Britain,David, Clahsen Harald, i Andrew Spencer. Linguistics: An Introduction. Cambridge, UK ; New York, NY: Cambridge University Press, 1999.

Cita MLA (8th ed.)

Radford, Andrew, et al. Linguistics: An Introduction. Cambridge University Press, 1999.