APA (7th ed.) Citation
Trask, R. L. (1994). Language change. Routledge.
Chicago Style (17th ed.) Citation
Trask, R. L. Language Change. London: Routledge, 1994.
MLA (9th ed.) Citation
Trask, R. L. Language Change. Routledge, 1994.
Warning: These citations may not always be 100% accurate.