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 [u.a.]: Mouton de Gruyter, 2009.

MLA (9th ed.) Citation

Wolf, Hans-Georg, and Frank Polzenhagen. World Englishes: A Cognitive Sociolinguistic Approach. Mouton de Gruyter, 2009.