Brock, G. W. (2003). The second information revolution. Harvard University Press.
Dyfyniad Arddull ChicagoBrock, Gerald W. The Second Information Revolution. Cambridge, Mass.: Harvard University Press, 2003.
Dyfyniad MLABrock, Gerald W. The Second Information Revolution. Harvard University Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.