Tolong jelaskan mengenai Rujukan dari Istana kota Tintagel dalam bahasa melayu

Henderson, Charles, In: Cornish Church Guide (1925) Truro: Blackford; p. 203–205

Pearce, Susan M. (1978) The Kingdom of Dumnonia. Padstow: Lodenek Press; pp. 76–80, 151–155 (monastic site; Tristan, Mark and Isolt)

Thomas, Charles (1988) Tintagel Castle; in  A reassessment of the evidence proposing a Celtic royal history for the site.