"After two years, Ballmer headed for a University's MBA program for a better grounding in business. When the fledgling Microsoft ran into problems in 1980, Gates persuaded his friend to drop out and give him a hand. "Jay Greene, Steve Hamm, Jim Kerstetter (2002-06-17). "Ballmer's Microsoft". BusinessWeek.{{cite web}}: CS1 maint: multiple names: authors list (link)