Notes
- Watt , Donald Cameron . 1989 . How War Came London
- Churchill , Winston S. 1949 . The Second World War , 11 London : 484
- Elliott , Nicholas . 1991 . Never Judge a Man by his Umbrella 122 Salisbury
- Behrendt , Hans‐Otto . 1985 . Rommel's Intelligence in the Desert Campaign 97 London
- Mure , David . 1977 . Practise to Deceive London
- Dovey , H.O. 1989 . ‘Operation Condor’ . Intelligence and National Security , 4 ( 2 ) April
- Foot , M.R.D. and Langley , J.M. 1979 . MI9 89 – 91 . 121 – 2 . 198 – 200 . London
- Sayer , Ian and Botting , Douglas . 1989 . America's Secret Army 62 London