Waddington 1997, p. 64. Waddington, Geoffrey (January 1997). "An Idyllic and Unruffled Atmosphere of Complete Anglo-German Misunderstanding: Aspects of the Operations of the Dienststelle Ribbentrop in Great Britain, 1934–1938". History. 82 (265): 44–74. doi:10.1111/1468-229X.00027.
Waddington 1997, p. 65-66. Waddington, Geoffrey (January 1997). "An Idyllic and Unruffled Atmosphere of Complete Anglo-German Misunderstanding: Aspects of the Operations of the Dienststelle Ribbentrop in Great Britain, 1934–1938". History. 82 (265): 44–74. doi:10.1111/1468-229X.00027.
Waddington 1997, p. 66-67. Waddington, Geoffrey (January 1997). "An Idyllic and Unruffled Atmosphere of Complete Anglo-German Misunderstanding: Aspects of the Operations of the Dienststelle Ribbentrop in Great Britain, 1934–1938". History. 82 (265): 44–74. doi:10.1111/1468-229X.00027.
Waddington 1997, p. 67. Waddington, Geoffrey (January 1997). "An Idyllic and Unruffled Atmosphere of Complete Anglo-German Misunderstanding: Aspects of the Operations of the Dienststelle Ribbentrop in Great Britain, 1934–1938". History. 82 (265): 44–74. doi:10.1111/1468-229X.00027.
Waddington 1997, p. 59-60. Waddington, Geoffrey (January 1997). "An Idyllic and Unruffled Atmosphere of Complete Anglo-German Misunderstanding: Aspects of the Operations of the Dienststelle Ribbentrop in Great Britain, 1934–1938". History. 82 (265): 44–74. doi:10.1111/1468-229X.00027.
Waddington 1997, p. 71. Waddington, Geoffrey (January 1997). "An Idyllic and Unruffled Atmosphere of Complete Anglo-German Misunderstanding: Aspects of the Operations of the Dienststelle Ribbentrop in Great Britain, 1934–1938". History. 82 (265): 44–74. doi:10.1111/1468-229X.00027.