MILLER HERBERT. (1995). ASTD TRAINERS SOURCEBOOK: SALES. MCGRAW-HILL.
Lua i Stíl Chicago (17ú heag.)MILLER HERBERT. ASTD TRAINERS SOURCEBOOK: SALES. NEW YORK: MCGRAW-HILL, 1995.
Lua MLA (9ú heag.)MILLER HERBERT. ASTD TRAINERS SOURCEBOOK: SALES. MCGRAW-HILL, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.