Berkovi, J. (2014). Effective client management in professional services: How to build successful client relationships. Gower Publishing Limited.
Chicago-Zitierstil (17. Ausg.)Berkovi, Jack. Effective Client Management in Professional Services: How to Build Successful Client Relationships. Farnham, Surrey, England: Gower Publishing Limited, 2014.
MLA-Zitierstil (9. Ausg.)Berkovi, Jack. Effective Client Management in Professional Services: How to Build Successful Client Relationships. Gower Publishing Limited, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.