MLA

Wengler, Stefan, and Prof. Michael Kleinaltenkamp. Key Account Management In Business-to-business Markets. DUV, 2006.

APA

Wengler, S., & Kleinaltenkamp, P. Michael. (2006). Key Account Management in Business-to-Business Markets. DUV.

Chicago

Wengler, Stefan, and Prof. Michael Kleinaltenkamp. Key Account Management In Business-To-Business Markets. : DUV, 2006.