Siemens, G. (1957). History of the house of Siemens. Freiburg: Verlag Karl Alber.
Trích dẫn kiểu ChicagoSiemens, Georg. History of the House of Siemens. Freiburg: Verlag Karl Alber, 1957.
MLA CitationSiemens, Georg. History of the House of Siemens. Freiburg: Verlag Karl Alber, 1957.
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