Siemens, G. (1957). History of the house of Siemens. Freiburg: Verlag Karl Alber.
Chicago Style CitationSiemens, Georg. History of the House of Siemens. Freiburg: Verlag Karl Alber, 1957.
Cita MLASiemens, Georg. History of the House of Siemens. Freiburg: Verlag Karl Alber, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.