APA Style

Trudgill, Peter. (1974). Sociolinguistics An Introduction . Australia: Penguin Books.

Chicago Style

Trudgill, Peter. Sociolinguistics An Introduction. Australia: Penguin Books, 1974. Text.

MLA Style

Trudgill, Peter. Sociolinguistics An Introduction. Australia: Penguin Books, 1974. Text.

Turabian Style

Trudgill, Peter. Sociolinguistics An Introduction. Australia: Penguin Books, 1974. Print.