VENTARA SOFTWARE. (1991). VENTARA SOFTWARE VERSION 4.0. VENTURA PUB.
Chicago Style aipamenaVENTARA SOFTWARE. VENTARA SOFTWARE VERSION 4.0. USA: VENTURA PUB, 1991.
MLA aipamenaVENTARA SOFTWARE. VENTARA SOFTWARE VERSION 4.0. VENTURA PUB, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.