@book{103132,
	author = {Molina Sangüesa, Itziar, and Mancho Duque, María Jesús.},
	title = {Letras, números e incógnitas :},
	publisher = {Iberoamericana ;},
	year = {2017.},
	series = {Lingüística Iberoamericana ;},
	address = {Madrid :},
	url = {https://elibro.net/ereader/politecnicointernacional/37119}
}