@book{16451,
	author = {Enger, Eldon D. and Smith, Bradley.},
	title = {Environmental Science :},
	publisher = {McGraw-Hill Education (ISE Editions),},
	year = {2013.},
	address = {[S.l.] :},
	edition = {13th ed.},
	note = {International Edition.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0071152660/chopaconline-20}
}