Steinle, F. Categorization and Experiment: Charles Dufay and the Two Electricities / Friedrich Steinle. Spaces of classification.(2003).
Chicago-Zitierstil (17. Ausg.)Steinle, Friedrich. "Categorization and Experiment: Charles Dufay and the Two Electricities / Friedrich Steinle." Spaces of Classification.(2003) .
MLA-Zitierstil (8. Ausg.)Steinle, Friedrich. "Categorization and Experiment: Charles Dufay and the Two Electricities / Friedrich Steinle." Spaces of Classification.(2003), .
警告：這些引文格式不一定是100％准確.