Otamendi, M. (192). El ferrocarril metropolitano Alfonso XIII de Madrid =: : Le chemin de fer Metropolitain Alfonso XIII de Madrid = The Metropolitano Alfonso XIII underground railway of Madrid. Madrid: Blass.
Cita MLA (8 ed.) (Copiar al portapapeles)Otamendi, Miguel. El Ferrocarril Metropolitano Alfonso XIII De Madrid =: : Le Chemin De Fer Metropolitain Alfonso XIII De Madrid = The Metropolitano Alfonso XIII Underground Railway of Madrid. Madrid: Blass , 192.