APA Style

Trudgill, Peter. (2000). Sociolinguistics (4th ed). : Penguin.

Chicago Style

Trudgill, Peter. Sociolinguistics. 4th ed : Penguin, 2000. .

MLA Style

Trudgill, Peter. Sociolinguistics. 4th ed : Penguin, 2000. .

Turabian Style

Trudgill, Peter. Sociolinguistics. 4th ed : Penguin, 2000. .