Colombo George W. (1994). Sales Force Automation. McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Colombo George W. Sales Force Automation. New York: McGraw Hill, 1994.
Lua MLA (9ú heag.)Colombo George W. Sales Force Automation. McGraw Hill, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.