APA (7th ed.) Citation

Trask, R. L., & Millar, R. M. (2015). Trask's historical linguistics (3rd edition.). Routledge.

Chicago Style (17th ed.) Citation

Trask, Robert L., and Robert McColl Millar. Trask's Historical Linguistics. 3rd edition. London ; New York: Routledge, 2015.

MLA (9th ed.) Citation

Trask, Robert L., and Robert McColl Millar. Trask's Historical Linguistics. 3rd edition. Routledge, 2015.