Steinle, F. Categorization and Experiment: Charles Dufay and the Two Electricities / Friedrich Steinle. Spaces of classification.(2003).
Cita Chicago (17th ed.)Steinle, Friedrich. "Categorization and Experiment: Charles Dufay and the Two Electricities / Friedrich Steinle." Spaces of Classification.(2003) .
Cita MLA (8th ed.)Steinle, Friedrich. "Categorization and Experiment: Charles Dufay and the Two Electricities / Friedrich Steinle." Spaces of Classification.(2003), .
Atenció: Aquestes cites poden no estar 100% correctes.