@book{43,
	author = {Villee, Claude A.},
	title = {Biología /  },
	publisher = {McGraw-Hill;},
	year = {1996.},
	address = {México: },
	edition = {8a ed.},
	note = {Villee, C. (1996). Biología. (8a ed.). Mexico : McGraw-Hill.}
}