Wertime, K. (2002). Building brands & believers. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Wertime, Kent. Building Brands & Believers. John Wiley & Sons, 2002.
Lua MLA (8ú heag.)Wertime, Kent. Building Brands & Believers. John Wiley & Sons, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.