Great Britain. Public Record Office, Pipe Roll Society (Great Britain), & Round, J. H. (2015). Ancient charters, royal and private, prior to A.D. 1200 (Searchable text ed.). TannerRitchie Publishing in collaboration with the Library and Information Services of the University of St Andrews.
Cita Chicago Style (17a ed.)Great Britain. Public Record Office, Pipe Roll Society (Great Britain), y John Horace Round. Ancient Charters, Royal and Private, Prior to A.D. 1200. Searchable text ed. Burlington: TannerRitchie Publishing in collaboration with the Library and Information Services of the University of St Andrews, 2015.
Cita MLA (8a ed.)Great Britain. Public Record Office, et al. Ancient Charters, Royal and Private, Prior to A.D. 1200. Searchable text ed. TannerRitchie Publishing in collaboration with the Library and Information Services of the University of St Andrews, 2015.