@book{71796,
	author = {Kraut, Robert E. and Resnick, Paul},
	title = {Building successful online communities :},
	publisher = {MIT Press,},
	year = {c2011},
	address = {Cambridge, Mass. :},
	url = {http://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=439527}
}