MLA

Voigt, Paul, and Axel von dem Bussche. The Eu General Data Protection Regulation (gdpr). Springer International Publishing, 2017.

APA

Voigt, P., & von dem Bussche, A. (2017). The EU General Data Protection Regulation (GDPR). Springer International Publishing.

Chicago

Voigt, Paul, and Axel von dem Bussche. The EU General Data Protection Regulation (GDPR). : Springer International Publishing, 2017.