1. Bennett, D. 1977 A Handbook of Kent's Defences from 1540 until 1945, Northfleet
2. Burridge, David 1987 The Dover Turret Admiralty Pier Fort, Rochester
3. The later fortifications of Dover
4. Coad, J. G. 1993 Hellfire Comer: Dover Castle's Secret Tunnels and the Dunkirk Evacuation, English Heritage.