@book{219848,
	author = {Withgott, Jay. and Brennan, Scott.},
	title = {Essential environment},
	publisher = {Pearson},
	year = {c2009.},
	address = {San Francisco},
	edition = {3rd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/ecip0820/2008024487.html}
}