Berry, T. (1986). Business planning with IBM (R) personal decision software. Bow Jones-Irwin.
Lua i Stíl Chicago (17ú heag.)Berry, Timothy. Business Planning with IBM (R) Personal Decision Software. Homewood, Ill: Bow Jones-Irwin, 1986.
Lua MLA (9ú heag.)Berry, Timothy. Business Planning with IBM (R) Personal Decision Software. Bow Jones-Irwin, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.