APA (7th ed.) Citation

Walker, J. A. (2010). Variation in linguistic systems. Routledge, Taylor & Francis Group.

Chicago Style (17th ed.) Citation

Walker, James A. Variation in Linguistic Systems. New York: Routledge, Taylor & Francis Group, 2010.

MLA (9th ed.) Citation

Walker, James A. Variation in Linguistic Systems. Routledge, Taylor & Francis Group, 2010.

Warning: These citations may not always be 100% accurate.