^McMurry, J. (1992). Organic Chemistry (3rd Edn.), Belmont:Wadsworth. ISBN 0-534-16218-5
^Cotton, F. Albert; Wilkinson, Geoffrey; Murillo, Carlos A.; Bochmann, Manfred (1999). Advanced Inorganic Chemistry (6th Edn.) New York:Wiley-Interscience. ISBN 0-471-19957-5.