@book{138880,
	author = {Watzlawick, Paul, and Weakland, John H.},
	title = {Cambio},
	publisher = {Editorial Herder},
	year = {c1985.},
	series = {Biblioteca de psicologia},
	address = {Barcelona},
	edition = {4a ed.},
	note = {Translation of: Change: principles of problem formation and problem resolution.}
}