BERRY, T. (1986). Business planning with IBM personal decision software. Dow Jones-Irwin.
Citazione stile Chigago Style (17a edizione)BERRY, Tomothy. Business Planning with IBM Personal Decision Software. Illinois: Dow Jones-Irwin, 1986.
Citatione MLA (9a ed.)BERRY, Tomothy. Business Planning with IBM Personal Decision Software. Dow Jones-Irwin, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.