APA (7th ed.) Zitazioa

Labov, W. (1994). Principles of linguistic change. Blackwell.

Chicago Style (17th ed.) Zitazioa

Labov, William. Principles of Linguistic Change. Oxford: Blackwell, 1994.

MLA (9th ed.) Zitazioa

Labov, William. Principles of Linguistic Change. Blackwell, 1994.