@book{126387,
	author = {Zulliger, Hans},
	title = {Evolución psicológica del niño},
	publisher = {Herder},
	year = {1971.},
	series = {Biblioteca de psicologia},
	address = {Barcelona},
	edition = {1. ed.},
	note = {Translation of: Das Kind in der Entwicklung.}
}