APA Style
Labov, William. (1994).
Principles of linguistic change: Internal factors .
Cambridge:
Blackwell Publishers.
Chicago Style
Labov, William.
Principles of linguistic change: Internal factors.
Cambridge:
Blackwell Publishers,
1994.
Text.
MLA Style
Labov, William.
Principles of linguistic change: Internal factors.
Cambridge:
Blackwell Publishers,
1994.
Text.
Turabian Style
Labov, William.
Principles of linguistic change: Internal factors.
Cambridge:
Blackwell Publishers,
1994.
Print.