Kerzner, Harold R., author
John Wiley & Sons, 2001
Buku Teks
Kerzner, Harold R., author
John Wiley & Sons, 2003
Buku Teks
Kerzner, Harold R., author
John Wiley & Sons, 1997
Buku Teks
Lewis, James P.
McGraw-Hill, 2007
Buku Teks
Patrick, Charles, author
Pearson/Prentice Hall, 2004
Buku Teks