Cita APA

Stallman, R. M., & Riyaz usman [ed.]. (2004). Free software free society. Alter Media.

Citación estilo Chicago

Stallman, Richard M., and Riyaz usman [ed.]. Free Software Free Society. Thrissur: Alter Media, 2004.

Cita MLA

Stallman, Richard M., and Riyaz usman [ed.]. Free Software Free Society. Alter Media, 2004.