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引文Siemens, Georg. History of the House of Siemens. Freiburg: Verlag Karl Alber, 1957.
警告:这些引文格式不一定是100%准确.