Nicolson, Joseph; Burn, Richard; Nicolson, William; Hornyold-Strickland, Henry (1777), The history and antiquities of the counties of Westmorland and Cumberland, vol. 1, pp. 554–555 "Manor of Smardale"
Mannex, P.J. (1849), History, topography, and directory, of Westmorland: and Londsdale north of the sands, in Lancashire together with a descriptive and geological view of the whole of the Lake district, Simpkin, Marshall, & co., p.161 'Smardale', hdl:2027/mdp.39015074814057
Lewis, Samuel (1835), A topographical dictionary of England, vol. 4, "Smardale"
Mannex, P.J. (1849), History, topography, and directory, of Westmorland: and Londsdale north of the sands, in Lancashire together with a descriptive and geological view of the whole of the Lake district, Simpkin, Marshall, & co., p.161 'Smardale', hdl:2027/mdp.39015074814057
