@book{6118,
	author = {Frankl, Viktor Emil, and Villanueva Salas, Marciano,},
	title = {Ante el vacio existencial :},
	publisher = {Editorial Herder,},
	year = {1994.},
	series = {Biblioteca de psicología.},
	address = {Barcelona :},
	edition = {7a. ed.}
}