VIEIRA WALTER. (2005). MANAGER TO CEO: CORPORATE WISDOM FOR SURVIVAL AND SUCCESS. RESPONSE BOOKS.
Lua i Stíl Chicago (17ú heag.)VIEIRA WALTER. MANAGER TO CEO: CORPORATE WISDOM FOR SURVIVAL AND SUCCESS. LONDON: RESPONSE BOOKS, 2005.
Lua MLA (9ú heag.)VIEIRA WALTER. MANAGER TO CEO: CORPORATE WISDOM FOR SURVIVAL AND SUCCESS. RESPONSE BOOKS, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.