APA (7th ed.) Citation

Barbour, S., & Stevenson, P. (1990). Variation in German: A critical approach to German sociolinguistics. Cambridge University Press.

Chicago Style (17th ed.) Citation

Barbour, Stephen, and Patrick Stevenson. Variation in German: A Critical Approach to German Sociolinguistics. Cambridge: Cambridge University Press, 1990.

MLA (9th ed.) Citation

Barbour, Stephen, and Patrick Stevenson. Variation in German: A Critical Approach to German Sociolinguistics. Cambridge University Press, 1990.