@Book{BVMC:223395, author = {Micheltorena, José Eusebio}, title = {Principios de educación para la primera edad}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2005}, year = {2005}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcqc0c2} }