Co-Founder, Jeff Atwood (June 19, 2010). "Improvements to Bounty System". Stack Overflow Blog. Archived from the original on July 9, 2021. Retrieved July 5, 2021.
Sewak, M.; et al. (May 18, 2010). "Finding a Growth Business Model at Stack Overflow, Inc"(PDF). Stanford CasePublisher. Rev. July 20, 2010 (2010–204–1). Stanford University School of Engineering: 31. 204-2010-1. Archived(PDF) from the original on August 13, 2012. Retrieved May 23, 2014.
Co-Founder, Jeff Atwood (June 19, 2010). "Improvements to Bounty System". Stack Overflow Blog. Archived from the original on July 9, 2021. Retrieved July 5, 2021.
Sewak, M.; et al. (May 18, 2010). "Finding a Growth Business Model at Stack Overflow, Inc"(PDF). Stanford CasePublisher. Rev. July 20, 2010 (2010–204–1). Stanford University School of Engineering: 31. 204-2010-1. Archived(PDF) from the original on August 13, 2012. Retrieved May 23, 2014.