* "Mathematics for Engineers" George Newnes Ltd (1938)==References====External links==*IEEE History Center biography*Department of Electronic & Electrical Engineering, UCL – home of the original Fleming valve*100 Years of Electronics 2004 – The Centenary of the Fleming Valve*Life and Times of Ambrose Fleming
* IEEE History Center biography* Department of Electronic & Electrical Engineering, UCL — home of the original Fleming valve* 100 Years of Electronics 2004 — The Centenary of the Fleming Valve