Wells, A.F.
At The Clarendon Press 1950, 1950
Buku Teks
Sharpe, Alan G.
Longman Scientific and Technical, 1992
Buku Teks
Partington, J. R.
Macmillan, 1961
Buku Teks
Huheey, James E., author
Harper Collins College, 1993
Buku Teks
editor-in-chief, R. Bruce King
John Wiley & Sons, 1995
Buku Referensi