@book{2151,
	author = {Sánchez, Norberto. and Sánchez Mariño, María Eugenia,},
	title = {Saber hacer 1 ES :},
	publisher = {Estrada,},
	year = {2012.},
	series = {Huella},
	address = {Buenos Aires :},
	edition = {1ª ed.}
}