Vajpayee, S. Kant
Prentice-Hall, 1995
Buku Teks
Foston, Arthur L
Prentice-Hall, 1991
Buku Teks
Scheer, August-Wilhelm, author
Springer-Verlag, 1994
Buku Teks
Singh, Nanua, author
John Wiley & Sons, 1996
Buku Teks
Holt, Don Rivers, author
McGraw-Hill, 1992
Buku Teks