MLA

Kimminich, Eva, et al. Express Yourself!. Bielefeld: transcript Verlag, 2015.

APA

Kimminich, E., Geuen, H., Pfänder, S., & Rappe, M. (2015). Express yourself!. Bielefeld: transcript Verlag.

Chicago

Kimminich, Eva, Heinz Geuen, Stefan Pfänder, and Michael Rappe. Express Yourself!. Bielefeld: transcript Verlag, 2015.