PROCTOR TONY. (1997). ESSENCE OF MANAGEMENT CREATIVITY. PRENTICE -HALL INTERNATIONAL; INC.
Lua i Stíl Chicago (17ú heag.)PROCTOR TONY. ESSENCE OF MANAGEMENT CREATIVITY. NEW JERSEY;USA: PRENTICE -HALL INTERNATIONAL; INC, 1997.
Lua MLA (9ú heag.)PROCTOR TONY. ESSENCE OF MANAGEMENT CREATIVITY. PRENTICE -HALL INTERNATIONAL; INC, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.