@Misc{BVMC:231976, author = {Alvar, Manuel}, title = {Lengua nacional y sociolingüística : las constituciones de América}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2006}, year = {2006}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc765v0} }