Schroeder, Edward D., author
McGraw-Hill, 1977
Buku Teks
Spellman, Frank R., author
CRC Press, 2009
Buku Referensi
Royal Society of chemistry, 2000
Buku Teks
Casey , T. J.
John Wiley & Sons, 1996
Buku Teks
Published for the Water Research Centre, Stevenage Laboratory by Horwood , 1981
Buku Teks