@book{10937,
	author = {Grouws, Douglas A. and Cebulla, Kristin J.},
	title = {Mejorando en matemáticas /},
	publisher = {Cooperativa Editorial Magisterio,},
	year = {2002.},
	series = {Practicas educativas; },
	address = {Bogotá :},
	note = {Incluye bibliográfia}
}