Blake, Monica, author
Aslib , 1999
Buku Teks
Callister, William D., Jr., 1940-, author
John Wiley & Sons, 2000
Buku Teks
Van Vlack, Lawrence H., author
Addison-Wesley, 1970
Buku Teks
Callister, William D., Jr., 1940-, author
John Wiley & Sons, 1997
Buku Teks
Sivarajan, V., author
Indian: Vikas, 1980
Buku Teks