Retrieved 2009-05-13. ↑ "German Attacks on Unfortified Towns". UK Parliament "Hansard". Retrieved 2009-05-13. ↑ Tucker, Wood & Murphy (2005), P.193 1 2 3 4 5 6 Beckett (2007), pp 258–261 ↑ Powers (1976), pp 50–51 ↑ Bourne (2001), p 10 ↑ Bourne (2001), p 20 ↑ "Air Raids".