BLANCHARD KEN. (2007). RAVING FANS: REVOLUTIONARY APPROACH TO CUSTOMER SERVICE. HARPER COLLINS PUBLISHERS.
Lua i Stíl Chicago (17ú heag.)BLANCHARD KEN. RAVING FANS: REVOLUTIONARY APPROACH TO CUSTOMER SERVICE. NEW DELHI: HARPER COLLINS PUBLISHERS, 2007.
Lua MLA (9ú heag.)BLANCHARD KEN. RAVING FANS: REVOLUTIONARY APPROACH TO CUSTOMER SERVICE. HARPER COLLINS PUBLISHERS, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.