@book{221732,
	author = {Werthmann, Christian, and Michael Van Valkenburgh Associates.},
	title = {Green roof},
	publisher = {Princeton Architectural Press,},
	year = {c2007.},
	address = {New York :},
	edition = {1st ed.},
	note = {"Michael Van Valkenburgh Associates' design for the headquarters of the American Society of Landscape Architects."},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10469422}
}