1. R.F. Tylecote, A History of Metallurgy (London: Metals Society, 1976).
2. Ronald Prain, Copper—The Anatomy of an Industry (London: Mining Journal Books Ltd., 1975).
3. American Bureau of Metal Statistics, Non-ferrous Metal Data, 1974–1990 series (Secaucus, NJ: ABMS, 1974–1990).
4. K.K. Kelley, “Contribution to the Data on Theoretical Metallurgy,” Bulletin 1976, (Washington, D.C.: Bureau of Mines, 1949); Bulletin 584, (1960).
5. JANAF Thermochemical Tables, 1st ed. (Washington, D.C.: NBS, 1964).