Free as in freedom : Richard Stallman's crusade for free software

by Williams, Sam
Published 2002

Google speaks : secrets of the world's greatest billionaire entrepreneurs, Sergey Brin and Larry Page

by Lowe, Janet
Published 2009

Richard Stallman et la révolution du logiciel libre : une biographie autorisée

by Stallman, Richard M., Williams, Sam, Masutti, Christophe
Published 2011