Cronstedt, Val
McGraw-Hill Book Company, Inc., 1961
Buku Teks
Shannon, Robert E.
John Wiley & Sons, 1980
Buku Teks
Cohen, William, author
Amacom, American Management Association., 1986
Buku Teks
Chang, C.M., author
Pearson-Prentice Hall, 2005
Buku Teks
John R. Canada, author
Pearson/Prentice Hall, 2004
Buku Teks