@book{6035,
	author = {Gallego-Badillo, Rómulo},
	title = {Discurso sobre constructivismo : nuevas estructuras conceptuales, metodológicas y actitudinales},
	publisher = {Magisterio,},
	year = {1996},
	series = {Mesa Redonda},
	address = {Bogotá:},
	edition = {2a.ed.}
}