Peter Pringle & Philip Jacobson (2000). Those Are Real Bullets, Aren't They?. London: Fourth Estate. ISBN978-1-84115-316-2. P. 100: "... the level of rioting was no greater than usual - and no petrol bombs or nail bombs were being thrown."
Widgery ReportАрхивирано на сајту Wayback Machine (23. септембар 2011), Part Three - "According to Miss Richmond a wounded man was calling for help and Mr McGuigan, carrying a white handkerchief, deliberately left a position of cover to attend to him. She said that he was shot at once. Other civilian witnesses confirmed this evidence and photographs of McGuigan's body show the white handkerchief in question."
Widgery ReportАрхивирано на сајту Wayback Machine (23. септембар 2011), Part Three - "According to Miss Richmond a wounded man was calling for help and Mr McGuigan, carrying a white handkerchief, deliberately left a position of cover to attend to him. She said that he was shot at once. Other civilian witnesses confirmed this evidence and photographs of McGuigan's body show the white handkerchief in question."