Cass, S. Free as in freedom: Richard Stallman's crusade for free software [Book Review]. IEEE spectrum.
Cita Chicago (17th ed.)Cass, S. "Free as in Freedom: Richard Stallman's Crusade for Free Software [Book Review]." IEEE Spectrum .
Cita MLA (9th ed.)Cass, S. "Free as in Freedom: Richard Stallman's Crusade for Free Software [Book Review]." IEEE Spectrum, .
Atenció: Aquestes cites poden no estar 100% correctes.