@book{230,
	author = {Universidad Nacional Autónoma de México},
	title = {Catálogo de programas de posgrado : },
	publisher = {UNAM,},
	year = {c1998. },
	series = {(Coyuntura). },
	address = {México, D.F. : },
	edition = {Primera edición.},
	url = {http://dspaceudual.org/handle/Rep-UDUAL/1858}
}