Knight 2009, p. 39; Liddiard 2005, p. 51; Goodall 2011, pp. 45–46 Knight, Jeremy K. (2009) [1991]. The Three Castles: Grosmont Castle, Skenfrith Castle, White Castle (revised ed.). Cardiff, UK: Cadw. ISBN978-1-85760-266-1. Liddiard, Robert (2005). Castles in Context: Power, Symbolism and Landscape, 1066 to 1500. Macclesfield, UK: Windgather Press. ISBN0-9545575-2-2. Goodall, John (2011). The English Castle, 1066–1650. New Haven, US and London, UK: Yale University Press. ISBN978-0-30011-058-6.
Knight 2009, p. 40; Radford 1962, p. 7; Cadw, "Scheduled Monuments- Full Report", Listed Buildings, retrieved 24 October 2017 Knight, Jeremy K. (2009) [1991]. The Three Castles: Grosmont Castle, Skenfrith Castle, White Castle (revised ed.). Cardiff, UK: Cadw. ISBN978-1-85760-266-1. Radford, C. A. Ralegh (1962). White Castle, Monmouthshire. London, UK: Her Majesty's Stationery Office. OCLC30258313.
Knight 2009, p. 12; Taylor 1961, p. 174 Knight, Jeremy K. (2009) [1991]. The Three Castles: Grosmont Castle, Skenfrith Castle, White Castle (revised ed.). Cardiff, UK: Cadw. ISBN978-1-85760-266-1. Taylor, A. J. (1961). "White Castle in the Thirteenth Century: A Re-Consideration". Medieval Archaeology. 5: 169–175. doi:10.1080/00766097.1961.11735651.
Radford 1962, p. 3; Knight 2009, p. 4 Radford, C. A. Ralegh (1962). White Castle, Monmouthshire. London, UK: Her Majesty's Stationery Office. OCLC30258313. Knight, Jeremy K. (2009) [1991]. The Three Castles: Grosmont Castle, Skenfrith Castle, White Castle (revised ed.). Cardiff, UK: Cadw. ISBN978-1-85760-266-1.
Radford 1962, p. 4; Knight 2009, p. 7 Radford, C. A. Ralegh (1962). White Castle, Monmouthshire. London, UK: Her Majesty's Stationery Office. OCLC30258313. Knight, Jeremy K. (2009) [1991]. The Three Castles: Grosmont Castle, Skenfrith Castle, White Castle (revised ed.). Cardiff, UK: Cadw. ISBN978-1-85760-266-1.
Radford 1962, p. 6 Radford, C. A. Ralegh (1962). White Castle, Monmouthshire. London, UK: Her Majesty's Stationery Office. OCLC30258313.
Knight 2009, pp. 37–38; Radford 1962, p. 11 Knight, Jeremy K. (2009) [1991]. The Three Castles: Grosmont Castle, Skenfrith Castle, White Castle (revised ed.). Cardiff, UK: Cadw. ISBN978-1-85760-266-1. Radford, C. A. Ralegh (1962). White Castle, Monmouthshire. London, UK: Her Majesty's Stationery Office. OCLC30258313.
Knight 2009, p. 40; Radford 1962, p. 7; Cadw, "Scheduled Monuments- Full Report", Listed Buildings, retrieved 24 October 2017 Knight, Jeremy K. (2009) [1991]. The Three Castles: Grosmont Castle, Skenfrith Castle, White Castle (revised ed.). Cardiff, UK: Cadw. ISBN978-1-85760-266-1. Radford, C. A. Ralegh (1962). White Castle, Monmouthshire. London, UK: Her Majesty's Stationery Office. OCLC30258313.