DOYLE, P. (2000). Value-based marketing. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)DOYLE, Peter. Value-based Marketing. John Wiley & Sons, 2000.
Lua MLA (8ú heag.)DOYLE, Peter. Value-based Marketing. John Wiley & Sons, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.