1. Piggott S. , The West Kennet Long Barrow, 1962
2. Berks Rams Hill . (Antiquaries Journal, XX, 1940, 474
3. Wilts Liddington Castle . (Wilts. Arch. Mag., XXXVIII, 1914, 583–4
4. Grinsell L. V. , The Archaeology of Wessex, 1958
5. Evans J. , Ancient Bronze Implements, 1881