MLA

Keßler, Jörg-U.; Lenzing, Anke; Liebner, Mathias, Anke Lenzing, and Mathias Liebner. Developing, Modelling and Assessing Second Languages. John Benjamins Publishing Company, 2016.

APA

Keßler, M., Lenzing, A., & Liebner, M. (2016). Developing, Modelling and Assessing Second Languages. John Benjamins Publishing Company.

Chicago

Keßler, Jörg-U.; Lenzing, Anke; Liebner, Mathias, Anke Lenzing, and Mathias Liebner. Developing, Modelling and Assessing Second Languages. : John Benjamins Publishing Company, 2016.