APA (7th ed.) Citation

Trask, R. L. (1999). Key concepts in language and linguistics. Routledge.

Chicago Style (17th ed.) Citation

Trask, R. L. Key Concepts in Language and Linguistics. London ; New York: Routledge, 1999.

MLA (9th ed.) Citation

Trask, R. L. Key Concepts in Language and Linguistics. Routledge, 1999.

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