Gary Kildall - Wikipedia

Unsung Hero: Exploring Gary Kildall, the Man Who Almost Became Bill Gates

Scott Kildall - Wikipedia

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Gary Kildall Biography - American computer scientist and microcomputer entrepreneur (1942–1994)

Unsung Hero: Exploring Gary Kildall, the Man Who Almost Became Bill Gates

Bill Gates - Wikipedia, The Free Encyclopedia, PDF, Computing

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Gary Kildall: Did Microsoft Steal DOS? - HubPages

The tragic story of Gary Kildall and the importance of being in the right place at the right time - BookJelly

Bill Gates at 60: his ten defining moments - Software - CRN Australia

Bill Gates at 60: his ten defining moments - Software - CRN Australia