APA (7th ed.) Citation
Wolf, H., & Polzenhagen, F. (2009). World Englishes: A cognitive sociolinguistic approach. Mouton de Gruyter.
Chicago Style (17th ed.) Citation
Wolf, Hans-Georg, and Frank Polzenhagen. World Englishes: A Cognitive Sociolinguistic Approach. Berlin ; New York: Mouton de Gruyter, 2009.
MLA (9th ed.) Citation
Wolf, Hans-Georg, and Frank Polzenhagen. World Englishes: A Cognitive Sociolinguistic Approach. Mouton de Gruyter, 2009.
Warning: These citations may not always be 100% accurate.