Helen O'Brien (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Helen O'Brien" in English language version.

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adevarul.ro

Barnes, Trevor (2020). "1.Code name- "Reverberate"". Dead Doubles: The Extraordinary Worldwide Hunt for One of the Cold War's Most Notorious Spy Rings. Orion. ISBN 978-1-4746-0912-8.
Thompson, Douglas (2013). "5. Doctor on the move". Stephen Ward: Scapegoat - They All Loved Him... But When It Went Wrong They Killed Him. Kings Road Publishing. p. 56. ISBN 978-1-78219-931-1. Archived from the original on 3 September 2023. Retrieved 3 September 2023.
Hollingsworth, Mark (2023). "6. All about Eve". Agents of influence: how the KGB subverted western democracies. London: Oneworld. pp. 147–174. ISBN 9780861545339. Archived from the original on 27 November 2023. Retrieved 29 October 2023.

"Helen O'Brien". The Daily Telegraph. 20 September 2005. Archived from the original on 29 October 2023. Retrieved 2 September 2023.

Horwell, Veronica (29 September 2005). "Obituary Helen O'Brien". The Guardian. Archived from the original on 29 October 2023. Retrieved 1 September 2023.

"Helen O'Brien". The Daily Telegraph. 20 September 2005. Archived from the original on 29 October 2023. Retrieved 2 September 2023.
Bouleanu, Elisabeth (17 January 2016). "Helen O'Brien, superba spioană româncă din Marea Britanie care l-a dat afară pe Nicu Ceauşescu din clubul ei, pentru că i-a pipăit animatoarele". Adevarul.ro (in Romanian). Archived from the original on 29 October 2023. Retrieved 3 September 2023.
Horwell, Veronica (29 September 2005). "Obituary Helen O'Brien". The Guardian. Archived from the original on 29 October 2023. Retrieved 1 September 2023.
Thompson, Douglas (2013). "5. Doctor on the move". Stephen Ward: Scapegoat - They All Loved Him... But When It Went Wrong They Killed Him. Kings Road Publishing. p. 56. ISBN 978-1-78219-931-1. Archived from the original on 3 September 2023. Retrieved 3 September 2023.
Hollingsworth, Mark (2023). "6. All about Eve". Agents of influence: how the KGB subverted western democracies. London: Oneworld. pp. 147–174. ISBN 9780861545339. Archived from the original on 27 November 2023. Retrieved 29 October 2023.