APA-ийн эшлэл(7 дахь хэвлэлт)
Berkovi, J. (2014). Effective client management in professional services: How to build successful client relationships. Gower Publishing Limited : Gower Publishing Company.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Berkovi, Jack. Effective Client Management in Professional Services: How to Build Successful Client Relationships. Surrey, England ; Burlington, Vermont: Gower Publishing Limited : Gower Publishing Company, 2014.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Berkovi, Jack. Effective Client Management in Professional Services: How to Build Successful Client Relationships. Gower Publishing Limited : Gower Publishing Company, 2014.
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