Cardinal von Widdern, G., Grierson, J. M., & Brackenbury, H. (1891). Staff duties in the field: A study of the operations of a British army corps and a cavalry division, from the point of view of the General staff, after the German of Major Cardinal von Widderns's "Das XVI. armee-corps und die 7. kavallerie-division während ihrer selbständigen operationen im Moselfeldzug bei Metz.". Printed for H.M. Stationery off. by Harrison and sons.

Cardinal von Widdern, Georg, et al. Staff Duties in the Field: A Study of the Operations of a British Army Corps and a Cavalry Division, from the Point of View of the General Staff, After the German of Major Cardinal Von Widderns's "Das XVI. Armee-corps Und Die 7. Kavallerie-division Während Ihrer Selbständigen Operationen Im Moselfeldzug Bei Metz.". Printed for H.M. Stationery off. by Harrison and sons, 1891.