Helene von Bismarck (29 March 2013). British Policy in the Persian Gulf, 1961–1968: Conceptions of Informal Empire. Palgrave Macmillan, გვ. 183. ISBN978-1-137-32673-7. „On the evening of 4 August, a letter was eventually delivered to Nuttall in the political agency in Abu Dhabi, stating the desire of the 'Heads and lawful representatives of [the] Ruling family' to depose the ruler and asking the British Government for its help in removing him from the shaikhdom“