1. F.R. Hartley (ed.), The Chemistry of the Platinum Group Metals, Elsevier, Amsterdam, 1991, p. 407.
2. W.P. Griffith, The Chemistry of the Rarer Platinum Metals, Wiley-Interscience, New York, 1967.
3. Gmelin Handbook of Inorganic Chemistry, System No. 64, Rhodium
4. Main volume 1938 (Element and Compounds); Supplement Volumes
5. Section 1 Compounds (Compounds with Ligands whose Donor Atoms include O, N, Halide, B, C) 1982