Meredith, Jack R., author
Wiley, 2015
Buku Teks
Gary, Clifford F.
McGraw-Hill, 2000
Multimedia
The McGraw-Hill, 2000
Multimedia
Kerzner, Harold R., author
John Wiley & Sons, 1997
Buku Teks
Kerzner, Harold R., author
Van Norstrand Reinhold, 1989
Buku Teks