Zdroje

https://sk.wikipedia.org/wiki/Softv%C3%A9r
https://www.rediff.com/business/slide-show/slide-show-1-tech-worlds-top-25-software-companies/20120112.htm#20
https://www.google.sk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http%3A%2F%2Fwww.cityofchicago.org%2Fcity%2Fen%2Fdepts%2Fdoit%2Fprovdrs%2Fsoftware_development.html&ei=PoFiVJe3LIit7Aa9l4CADg&bvm=bv.79189006,d.ZGU&psig=AFQjCNGMXqI7zlGBIUIbYcjudjlWRbR5yA&ust=1415828149842592
https://www.isgtw.org/images/2010/SoftwareEcosystemLarge.jpg
https://i2.kym-cdn.com/entries/icons/original/000/015/360/microsoft.jpg
https://www.google.sk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FBill_Gates&ei=rg9jVL-rCojuPKeZgcAB&bvm=bv.79189006,d.ZWU&psig=AFQjCNEo8M1rYzgrqA_FWzkcnHu8Z3uKFw&ust=1415864587997132
https://upload.wikimedia.org/wikipedia/commons/5/51/IBM_logo.svg
https://www.zive.sk/clanok/96325/softverove-firmy-sa-spojili-tvoria-holding-s-partnerom-j-t