APA Style

Trudgill, Peter. (1974). Sociolinguitics an Introduction (1). New York: Penguin Books.

Chicago Style

Trudgill, Peter. Sociolinguitics an Introduction. 1 New York: Penguin Books, 1974. Text.

MLA Style

Trudgill, Peter. Sociolinguitics an Introduction. 1 New York: Penguin Books, 1974. Text.

Turabian Style

Trudgill, Peter. Sociolinguitics an Introduction. 1 New York: Penguin Books, 1974. Print.