@book{49981,
	author = {Callingham, Martin. and ebrary, Inc.},
	title = {Market intelligence},
	publisher = {Kogan Page,},
	year = {c2004.},
	series = {Market research in practice series},
	address = {London ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10084453}
}