@book{153678,
	author = {Gracián, Baltasar, and Santa Marina, Luys,},
	title = {El héroe. El discreto. Oráculo manual y arte de prudencia},
	publisher = {Planeta,},
	year = {1996.},
	series = {Clásico Universales Planeta ;},
	address = {Barcelona, España :},
	edition = {3a ed.}
}