APA (7th ed.) Citation

Adli, A., García García, M., & Kaufmann, G. (2015). Variation in language: System- and usage-based approaches. De Gruyter.

Chicago Style (17th ed.) Citation

Adli, Aria, Marco García García, and Göz Kaufmann. Variation in Language: System- and Usage-based Approaches. Berlin, [Germany] ; Boston, [Massachusetts]: De Gruyter, 2015.

MLA (9th ed.) Citation

Adli, Aria, et al. Variation in Language: System- and Usage-based Approaches. De Gruyter, 2015.