N. N. Greenwood & A. Earnshaw, 2012, "Chemistry of the Elements," 2nd Edn., Amsterdam, NH, NLD:Elsevier, ISBN0080501095, see [1], accessed 8 July 2015. [Page numbers marked by superscript, inline.]
Atkins, P. W.; Overton, T. L.; Rourke, J. P.; Weller, M. T.; Armstrong, F. A., 2010, Shriver and Atkins' Inorganic Chemistry 5th Edn., pp. 65, 75, 99f, 268, 271, 277, 287, 356, 409, Oxford, OXF, GBR: Oxford University Press, ISBN0199236178, see [2], accessed 8 July 2015.