@book{23452,
	author = {Martínez, Susanna. and Bigues, Jordi,},
	title = {El libro de las 3 R :},
	publisher = {Ned ediciones,},
	year = {2013.},
	series = {Proyecto Natur},
	address = {Barcelona :},
	url = {https://elibro.net/ereader/politecnicointernacional/59695}
}