@book{48495,
	author = {Enger, Eldon D. and Ross, Frederick C.},
	title = {Concepts in biology /},
	publisher = {McGraw-Hill,},
	year = {c2009.},
	address = {New York :},
	edition = {13th ed.},
	note = {Includes index},
	url = {http://www.loc.gov/catdir/toc/ecip0724/2007031163.html}
}