Po-Chedley, D. (2007). Client relationship management.
Lua i Stíl Chicago (17ú heag.)Po-Chedley, David. Client Relationship Management. Mumbai, 2007.
Lua MLA (9ú heag.)Po-Chedley, David. Client Relationship Management. 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.