APA (7th ed.) Citation

Campbell, L. (2004). Historical linguistics: An introduction (2nd ed.). MIT Press.

Chicago Style (17th ed.) Citation

Campbell, Lyle. Historical Linguistics: An Introduction. 2nd ed. Cambridge, Mass: MIT Press, 2004.

MLA (8th ed.) Citation

Campbell, Lyle. Historical Linguistics: An Introduction. 2nd ed. MIT Press, 2004.