@book{139244,
	author = {Freytag, Per Vagn. and ebrary, Inc.},
	title = {Challenging business relationships},
	publisher = {Emerald Group Publishing,},
	year = {c2007.},
	series = {Journal of Business & Industrial Marketing ;},
	address = {Bradford, England :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10172222}
}