See:
- https://www.mithraeum.eu/monument/77
- http://www.tertullian.org/rpearse/mithras/display.php?page=cimrm2374
- George C. Boon: A Temple of Mithras at Caernarvon-Segontium. In Archaeologia Cambrensis 1960. pp136–178.
- R. E. M. Wheeler, "Segontium and the Roman Occupation of Wales", Y Cymmrodor, XXXIII (1924).-https://archive.org/details/ycymmrodor33cymmuoft