Rao, A. Ramachandra
McGraw-Hill, 1992
Buku Teks SO
Pillis, John de
Holt, Rinehart and Winston, 1969
Buku Teks SO
Lawson, Terry
John Wiley & Sons, 1996
Buku Teks SO
White, Paul A.
Dickenson, 1966
Buku Teks SO
Hadley, George, 1930-
Addison-Wesley, 1961
Buku Teks SO