APA (7th ed.) Citation

(2005). Perspectives on variation: Sociolinguistic, historical, comparative. de Gruyter. https://doi.org/10.1515/9783110909579

Chicago Style (17th ed.) Citation

Perspectives on Variation: Sociolinguistic, Historical, Comparative. Berlin [u.a.]: de Gruyter, 2005. https://doi.org/10.1515/9783110909579.

MLA (9th ed.) Citation

Perspectives on Variation: Sociolinguistic, Historical, Comparative. de Gruyter, 2005. https://doi.org/10.1515/9783110909579.