@book{6801,
	author = {Pacheco, José Emilio,  and Toledo, Francisco, },
	title = {Album de zoología /},
	publisher = {El Colegio Nacional : Ediciones Era, },
	year = {c2006},
	address = {México, D.F. :},
	edition = {2 ed. corregida.},
	url = {https://www.cicy.mx/sitios/sib/doctoelectronico/7473.pdf}
}