Simon, Herbert A., author
Harper, 1960
Buku Teks
Mathur, Kamlesh, author
Prentice-Hall, 1994
Buku Teks
by G.D. Eppen ... [et.al.]
Prentice Hall International, 1998
Buku Teks
Thomson, Gerald, author
McGraw-Hill, 1976
Buku Teks
Baker, Kenneth R
John Wiley & Sons, 1985
Buku Teks