DESS G.G. (1999). BEYOND PRODUCTIVITY. AMACOM.
Lua i Stíl Chicago (17ú heag.)DESS G.G. BEYOND PRODUCTIVITY. NEW YORK: AMACOM, 1999.
Lua MLA (9ú heag.)DESS G.G. BEYOND PRODUCTIVITY. AMACOM, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.