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 New York: Cambridge University Press, 1990.

MLA (8th ed.) Citation

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