@book{113324,
	author = {Watson, Robert N. and ebrary, Inc.},
	title = {Back to nature},
	publisher = {University of Pennsylvania Press,},
	year = {2008.},
	address = {Philadelphia :},
	edition = {1st pbk. ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10748565}
}