Radford, A. (1999). Linguistics: An introduction. Cambridge University Press.
Cita Chicago (17th ed.)Radford, Andrew. Linguistics: An Introduction. Cambridge, [England]: Cambridge University Press, 1999.
Cita MLA (9th ed.)Radford, Andrew. Linguistics: An Introduction. Cambridge University Press, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.