@book{133743,
	author = {Luft, Joseph.},
	title = {Introducción a la dinámica de grupos :},
	publisher = {Editorial Herder,},
	year = {1978.},
	series = {Biblioteca de psicología, v 18.},
	address = {Barcelona :},
	edition = {4a ed.},
	note = {Translation of : Introduction ́a la dynamique des groupes.}
}