Personal Computer Contest (PDF). computerhistory.org. 1986 [2021-01-13]. (原始内容存档 (PDF)于2021-02-24). Timeline of Computer History. Computer History Museum
[2017-07-16], (原始内容存档于2018-04-26) . HistoryofComputers and Computing, Birth of the modern computer, Personal computer, Xerox Alto. [2016-04-19]. (原始内容存档于2020-12-05)