@book{170228,
	author = {Edwards, Ernest Preston and Murrell Butler, Edwards, il.},
	title = {A field guide to the birds of Mexico and adjacent areas : Belize, Guatemala and El Salvador  /},
	publisher = {University of Texas Press,},
	year = {2015},
	address = {Austin, Texas  :},
	edition = {3a ed.},
	note = {Revisión de la 2a ed. de: Field guide to the birds of Mexico, 1989.}
}