@book{37694,
	author = {Zulliger, Hans. and Guera Miralles, Alfredo,},
	title = {El niño normal y su entorno :},
	publisher = {Ediciones Morata,},
	year = {1980.},
	series = {Psicología. La psicología y el niño},
	address = {Madrid :},
	edition = {2a ed.}
}