Simpson, Colin D.
Prentice-Hall, 1996
Buku Teks
Monappa, Arun
Tata McGraw-Hill, 1985
Buku Teks
Kissell, Thomas E.
Prentice Hall International, 1997
Buku Teks SO
Gilmer, B. von Haller (Beverly von Haller), 1909-1994
McGraw-Hill, 1966
Buku Teks SO
McCormick, Ernest James
Prentice-Hall, 1980
Buku Teks SO