"Percée au nord" [Breakthrough in the north]. Métro-pole.net (in French). Archived from the original on 12 January 2013. Retrieved 3 April 2010.
batiactu.com
"Nord-Sud". Le métro parisien dévoile son patrimoine (diaporama) (in French). Cap Information Professionnelle. 16 September 2008. Retrieved 6 February 2011.
bnf.fr
gallica.bnf.fr
"Le " nord-sud " électrique" [The electric "North-South"]. Le journal des transports. 25 (26): 317. 28 June 1902.
"Le métro avance vers Aubervilliers" [The metro goes toward Aubervilliers]. seine-saint-denis.fr. Conseil général de la Seine-Saint-Denis. 21 January 2011. Archived from the original on 21 July 2011. Retrieved 7 February 2011.
"Le métro avance vers Aubervilliers" [The metro goes toward Aubervilliers]. seine-saint-denis.fr. Conseil général de la Seine-Saint-Denis. 21 January 2011. Archived from the original on 21 July 2011. Retrieved 7 February 2011.