Fifth Column (intelligence operation) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Fifth Column (intelligence operation)" in English language version.

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irishtimes.com

Bloomberg (24 October 2014). "The spy who came in from the bank: fake Nazi agent named". The Irish Times. Retrieved 11 March 2019.

Dixon, Hayley (27 February 2014). "The spy who turned Hitler's British supporters into unwitting double agents". Daily Telegraph. ISSN 0307-1235. Archived from the original on 6 March 2014. Retrieved 11 March 2019.

Dixon, Hayley (27 February 2014). "The spy who turned Hitler's British supporters into unwitting double agents". Daily Telegraph. ISSN 0307-1235. Archived from the original on 6 March 2014. Retrieved 11 March 2019.

Hutton, Robert (2018). Agent Jack: the true story of MI5's secret Nazi hunter. London: Weidenfeld & Nicolson. ISBN 978-1-4746-0511-3. OCLC 958098293.
Curry, John Court (1999). The Security Service 1908-1945 : The Official History. Great Britain. Public Record Office. Kew: Public Record Office. ISBN 1873162790. OCLC 59400306.
Dixon, Hayley (27 February 2014). "The spy who turned Hitler's British supporters into unwitting double agents". Daily Telegraph. ISSN 0307-1235. Archived from the original on 6 March 2014. Retrieved 11 March 2019.
Kate, Atkinson (2018). Transcription. London. ISBN 9780857525888. OCLC 1014437344.{{cite book}}: CS1 maint: location missing publisher (link)
Quinn, Anthony (2018). Our Friends in Berlin. London. ISBN 9781787330979. OCLC 1046677709.{{cite book}}: CS1 maint: location missing publisher (link)