The Early History of Nupedia and Wikipedia: A Memoir. Chris DiBona, DaneseCooper, and Mark Stone (编). Open Sources 2.0: The Continuing Evolution. O'Reilly
ISBN 978-0-262-01705-3. (原始内容存档于2016-04-22). DiBona, Chris; Stone, Mark; Cooper, Danese. Open Sources 2.0: The Continuing Evolution. October 2005: 38–40 [2016-03-05]