FLEISCHER J. (2002). COMPLETE GUIDE TO CUSTOMER SUPPORT. CMP BOOK.
Lua i Stíl Chicago (17ú heag.)FLEISCHER J. COMPLETE GUIDE TO CUSTOMER SUPPORT. NEW YORK: CMP BOOK, 2002.
Lua MLA (9ú heag.)FLEISCHER J. COMPLETE GUIDE TO CUSTOMER SUPPORT. CMP BOOK, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.