@book{246468,
	author = {Kraut, Robert E. and Resnick, Paul. and ebrary, Inc.},
	title = {Building successful online communities},
	publisher = {MIT Press,},
	year = {2011.},
	address = {Cambridge, Mass. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10539250}
}