Jain, Surender Kumar
Thomson Brooks/Cole, 2004
Buku Teks
Sernesi, E.
Chapman & Hall, 1993
Buku Teks
Pillis, John de
Holt, Rinehart and Winston, 1969
Buku Teks
Lawson, Terry
John Wiley & Sons, 1996
Buku Teks
Cullen, Charles G.
PWS-Kent Publishing, 1991
Buku Teks