Xem Padel 1994; Sims-Williams 1991; Green 2007b; và Roberts 1991aPadel, O. J. (1994), “The Nature of Arthur”, Cambrian Medieval Celtic Studies (27): 1–31. Sims-Williams, Patrick (1991), “The Early Welsh Arthurian Poems”, trong Bromwich, Rachel; Jarman, A. O. H.; Roberts, Brynley F. (biên tập), The Arthur of the Welsh, Cardiff: University of Wales Press, tr. 33–71, ISBN978-0-7083-1107-3. Green, Thomas (2007b), Concepts of Arthur, Stroud: Tempus, ISBN978-0-7524-4461-1. Roberts, Brynley F. (1991a), “Culhwch ac Olwen, The Triads, Saints' Lives”, trong Bromwich, Rachel; Jarman, A. O. H.; Roberts, Brynley F. (biên tập), The Arthur of the Welsh, Cardiff: University of Wales Press, tr. 73–95, ISBN978-0-7083-1107-3.
Thorpe 1966, nhưng xem thêm Loomis 1956 Thorpe, Lewis biên tập (1966), Geoffrey of Monmouth, The History of the Kings of Britain, Harmondsworth: Penguin, OCLC3370598. Loomis, Roger Sherman (1956), “The Arthurian Legend before 1139”, trong Loomis, Roger Sherman (biên tập), Wales and the Arthurian Legend, Cardiff: University of Wales Press, tr. 179–220, OCLC2792376.