R. K. Wilson, Textbook of automatic pistols : being a treatise on the history, development and functioning of the modern military self-loading pistol, its special ammunition, and their evolvement into the sub-machine gun, together with a supplementing chapter on the light machine gun, 1884-1935, Wolfe Pub. Co, , 349 p. (ISBN0-935632-89-1 et 978-0-935632-89-7, OCLC34695145), p. 262.