BERRY, T. (1986). Business planning with IBM personal decision software. Dow Jones-Irwin.
Chicago-referens (17:e uppl.)BERRY, Tomothy. Business Planning with IBM Personal Decision Software. Illinois: Dow Jones-Irwin, 1986.
MLA-referens (9:e uppl.)BERRY, Tomothy. Business Planning with IBM Personal Decision Software. Dow Jones-Irwin, 1986.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.