@book{114240,
	author = {Wyckoff, Jerry and Unell, Barbara C.},
	title = {Cómo disciplinar a su hijo},
	publisher = {Editorial Norma},
	year = {c1990.},
	series = {Hogar y familia},
	address = {Barcelona},
	note = {Translation of: Discipline without shouting or spanking : practical solutions to the most common preschool behavior problems}
}