@book{170229,
	author = {Glassberg, Jeffrey},
	title = {A Swift guide to the butterflies of Mexico and Central America  /},
	publisher = {Princeto University Press,},
	year = {    },
	address = {New Jersey  :},
	edition = {2a ed.},
	note = {En portada: aprobado por la Asociación Norteamericana de Mariposas}
}