APA (7th ed.) Citation

Trudgill, P. (1984). Language in the British Isles. University Press.

Chicago Style (17th ed.) Citation

Trudgill, Peter. Language in the British Isles. Cambridge [etc.]: University Press, 1984.

MLA (9th ed.) Citation

Trudgill, Peter. Language in the British Isles. University Press, 1984.