Clark, R. J. H., Bradley, P. C., & Thornton, P. (1973). The chemistry of titanium, zirconium and hafnium. Oxford : Pergamon Pr..
Lua i Stíl Chicago (17ú heag.)Clark, R. J. H., P. C. Bradley, agus P. Thornton. The Chemistry of Titanium, Zirconium and Hafnium. Oxford : Pergamon Pr., 1973.
Lua MLA (9ú heag.)Clark, R. J. H., et al. The Chemistry of Titanium, Zirconium and Hafnium. Oxford : Pergamon Pr., 1973.
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