Graham, L. (1997). Proversity: Getting past face value and finding the soul of people : a manager's journey. Wiley.
Lua i Stíl Chicago (17ú heag.)Graham, Lawrence. Proversity: Getting Past Face Value and Finding the Soul of People : A Manager's Journey. New York: Wiley, 1997.
Lua MLA (8ú heag.)Graham, Lawrence. Proversity: Getting Past Face Value and Finding the Soul of People : A Manager's Journey. Wiley, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.