Thuillier, Guy (1966). "La vie d'une mine rurale : La Machine (1830-1870)". Aspects de l'économie nivernaise au XIXe siècle [Aspects of the Nièvre Economy in the 19th Century] (in French). Vol. 50. Paris: Armand Colin. pp. 323–345. Archived from the original on June 18, 2022.
Thuillier, Guy (1966). "La vie d'une mine rurale : La Machine (1830-1870)". Aspects de l'économie nivernaise au XIXe siècle [Aspects of the Nièvre Economy in the 19th Century] (in French). Vol. 50. Paris: Armand Colin. pp. 323–345. Archived from the original on June 18, 2022.