Trask, R. L. (2007). Language and linguistics: The key concepts (2nd ed.). Routledge.
Cita Chicago (17th ed.)Trask, R. L. Language and Linguistics: The Key Concepts. 2nd ed. Abingdon, Oxon: Routledge, 2007.
Cita MLA (9th ed.)Trask, R. L. Language and Linguistics: The Key Concepts. 2nd ed. Routledge, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.