Kemp, William, author
Macmillan, 1986
Buku Teks
Brevard, C., author
John Wiley & Sons, 1981
Buku Referensi
Fyfe, Colin A.
C.F.C. Press, 1983
Buku Teks
Gunther, Harald, author
John Wiley & Sons, 2001
Buku Teks
edited by G.A. Webb
Academic Press, 1982
Buku Teks