@book{68660,
	author = {Hiltz, Starr Roxanne.},
	title = {Learning together online :},
	publisher = {Lawrence Erlbaum Associates,},
	year = {2005.},
	address = {Mahwah, N.J. :},
	url = {http://catdir.loc.gov/catdir/enhancements/fy0644/2004043634-d.html}
}