- ^ Fischer, John. Famous Philadelphians – Nine Richest Philadelphians. About.com – Greater Philadelphia / South Jersey. 2002 [18 February 2006]. (原始内容存档于2006-03-29).
- ^ Thomas, Donald A. Jr. –1977–. ICWhen.com. 2005 [18 February 2006]. (原始内容存档于2006-03-12).
- ^ Gremlin Industries Incorporated. Wall Games. 2004 [18 February 2006]. (原始内容存档于2005-12-31).
- ^ Namco History (English summary). NAMCO WonderPage. 2001 [18 February 2006]. (原始内容存档于2006-01-10).
- ^ Electronic Toys Taking A Beating (December 17, 1980)
- ^ ThirdWay (页面存档备份,存于互联网档案馆), p. 26, April 2003
- ^ Goldberg, Martin. Museum of Home Video Gaming. 2003 [18 February 2006]. (原始内容存档于2006-02-11).
- ^ Color TV Game 6. NinDB. [18 February 2006]. (原始内容存档于2009-08-17).
- ^ Squire, Lance F. The Bally/Astrocade FAQ version h2.8. Lance F. Squire Homepage. 2005 [19 February 2006]. (原始内容存档于2006-02-07).
- ^ Miller, Michael. A History of Home Video Game Consoles > First Generation: 1972–1977. InformIT. 2005 [18 February 2006]. (原始内容存档于2007-12-26).
- ^ Atari 2600 History. AtariAge. 2006 [18 February 2006]. (原始内容存档于2006-02-19).
- ^ Hunter, William. Player 2 Stage 1: The Coin Eaters. The Dot Eaters. 2005 [18 February 2006]. (原始内容存档于2007-12-31).
- ^ History of Infocom. Infocom – The Master Storytellers. [18 February 2006]. (原始内容存档于2020-02-26).
- ^ Koster, Raph. Online World Timeline. Raph Koster's Website. 2002 [18 February 2006]. (原始内容存档于2006-02-14).