@book{22568,
	author = {Smith, T. M. and Smith, Robert Leo.},
	title = {Elements of ecology /},
	publisher = {Benjamin Cummings,},
	year = {c2006.},
	address = {San Francisco, CA :},
	edition = {6th ed.},
	note = {Authors' names in reversed order in earlier editions.},
	url = {http://www.loc.gov/catdir/toc/ecip0517/2005024230.html}
}