@book{1920,
	author = {Meza Baltazar, Elsa N. and Castañel, Miguel},
	title = {El manejo sostenible de sangre de drago o sangre de grado : },
	publisher = {[s.e.],},
	year = {[s.f.].},
	address = {[s.l.]:},
	note = {Incluye anexos}
}