@book{1956,
	author = {ECA. and Jon Sobrino;Roerto Rodriguez Melendez; Jose Miguel Cruz;Hector Samour},
	title = {Aniversario de los mártires de la uca: Doce años},
	publisher = {Universidad "Jose Simeon Cañas"},
	year = {2001.},
	series = {637 -638 Nov -Dic},
	address = {San salvador, El salvador:}
}