Shackelford, James F., author
Prentice-Hall, 1996
Buku Teks
Callister, William D., Jr., 1940-, author
John Wiley & Sons, 2000
Buku Teks
Callister, William D., Jr., 1940-, author
John Wiley & Sons, 1997
Buku Teks
Sirvarajan, V.
Bangalore: V.K. Publisher, 1980
Buku Teks
Callister, William D., Jr., 1940-, author
John Wiley & Sons, 2007
Buku Teks