↑Bergstein, Brian (25 March 2007). "Sanger says he co-started Wikipedia". MSNBC. Associated Press. Retrieved 2007-03-25. "The nascent Web encyclopedia Citizendium springs from Larry Sanger, a philosophy Ph.D. who counts himself as a co-founder of Wikipedia, the site he now hopes to usurp. The claim doesn't seem particularly controversial — Sanger has long been cited as a co-founder. Yet the other founder, Jimmy Wales, isn't happy about it."