MLA

Zimmerli, Walther Ch, et al. Corporate Ethics and Corporate Governance. Springer Berlin Heidelberg, 2007.

APA

Zimmerli, W. Ch, Holzinger, M., Richter, K., Zimmerli, W. C, & Zimmerli, W. Christoph. (2007). Corporate Ethics and Corporate Governance. Springer Berlin Heidelberg.

Chicago

Zimmerli, Walther Ch, Markus Holzinger, Klaus Richter, Walther C Zimmerli, and Walther Christoph Zimmerli. Corporate Ethics and Corporate Governance. : Springer Berlin Heidelberg, 2007.