@book{201693,
	author = {Karp, Gerald. and Geer, Peter van der.},
	title = {Biología celular y molecular},
	publisher = {McGraw-Hill},
	year = {c2006.},
	address = {México},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/description/wiley041/2004053023.html}
}