[1] Garrison, Ervan G., "A history of engineering and technology". CRC Press, 1998. ISBN 084939810X, 9780849398100. Retrieved May 7, 2009.
For a description and superb illustration of one such early electric motor designed by Froment, see a Google Books PDF online version of Ganot's Physics, 14th Edition, N.Y., 1893 translated by Atkinson, pp. 907 and 908. (Section 899, and Figure 888). (Note to readers using Google: This is not Ganon's Physics.)
[2]
doi.org
Gee, William (2004). "Sturgeon, William (1783–1850)". Oxford Dictionary of National Biography. Oxford, England: Oxford University Press. doi:10.1093/ref:odnb/26748.
fh-zwickau.de
"salinan arkib"(PDF). Diarkibkan daripada yang asal(PDF) pada 2013-09-14. Dicapai pada 2009-07-02.
