Ulke, T. (1903). Modern electrolytic copper refining. John Wiley.
Cita Chicago (17th ed.)Ulke, Titus. Modern Electrolytic Copper Refining. New York: John Wiley, 1903.
Cita MLA (8th ed.)Ulke, Titus. Modern Electrolytic Copper Refining. John Wiley, 1903.
Atenció: Aquestes cites poden no estar 100% correctes.