MLA

Purnhagen, Kai, and Peter Rott. Varieties of European Economic Law and Regulation. Springer International Publishing, 2014.

APA

Purnhagen, K., & Rott, P. (2014). Varieties of European Economic Law and Regulation. Springer International Publishing.

Chicago

Purnhagen, Kai, and Peter Rott. Varieties of European Economic Law and Regulation. : Springer International Publishing, 2014.