WHITTEN, Kenneth W.; GAILEY, Kenneth D.; DAVIS, Raymond E.. General Chemistry. 4th. vyd. [s.l.] : Saunders College Publishing, 1992. Dostupné online.ISBN 0-03-072373-6. S. 660.
PETRUCCI, Ralph H.; HARWOOD, William S.; HERRING, F. Geoffrey. General Chemistry. 8th. vyd. [s.l.] : Prentice Hall, 2002. Dostupné online.ISBN 0-13-014329-4. S. 667–8.