Fader Peter. (2012). Customer Centricity. Wharton Digital Press.
Lua i Stíl Chicago (17ú heag.)Fader Peter. Customer Centricity. Philadelphia: Wharton Digital Press, 2012.
Lua MLA (9ú heag.)Fader Peter. Customer Centricity. Wharton Digital Press, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.