Nonfree DRM'd Games on GNU/Linux: Good or Bad? on fsf.org by Richard Stallman "Nonfree game programs (like other nonfree programs) are unethical because they deny freedom to their users. (Game art is a different issue, because it isn't software." (May 31, 2012)
Nielsen Business Media, Inc. (18 de julio de 1998). Billboard. Nielsen Business Media, Inc. ISSN0006-2510. Consultado el 3 de diciembre de 2011.
linuxtoday.com
Richard Stallman -- On "Free Hardware" on linuxtoday.com "I see no social imperative for free hardware designs like the imperative for free software." (Jun 22, 1999)
Nonfree DRM'd Games on GNU/Linux: Good or Bad? on fsf.org by Richard Stallman "Nonfree game programs (like other nonfree programs) are unethical because they deny freedom to their users. (Game art is a different issue, because it isn't software." (May 31, 2012)