Anderson, Chris. Free: The Future of a Radical Price. Hyperion, 2009.
Crypto anarchy, cyberstates, and pirate utopias. Cambridge, Mass: MIT, 2001.
Engels, Karl Marx, Frederick. The Communist Manifesto. Filiquarian, 2007.
Fuchs, Christian. Internet and society social theory in the information age. New York: Routledge, 2008.
Lessig, Lawrence. Remix: Making Art and Commerce Thrive in the Hybrid Economy. Penguin P HC, The, 2008.
Lessig, Lawrence. Code Version 2.0. New York: Basic Books, 2006.
Lessig, Lawrence. Free culture how big media uses technology and the law to lock down culture and control creativity. New York: Penguin P, 2004.
Good stuff. You might want to check out some of the sources william cites, too…