Engel, Thomas
Pearson Prentice Hall, 2008
Buku Teks
Boas, Mary L.
John Wiley & Sons, 1983
Buku Teks SO
Barrow, Gordon M.
McGraw-Hill, 1981
Buku Teks SO
Schwartz, Laurent
Addison-Wesley , 1966
Buku Teks SO
Barrante, James R.
Prentice-Hall, 1977
Buku Teks SO