@book{216903,
	author = {Chang, Raymond.},
	title = {Química},
	publisher = {McGraw-Hill},
	year = {c2010.},
	address = {México},
	edition = {10th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0909/2008033016-b.html}
}