Kearns, Kevin P.
Jossey-Bass Publishers, 1996
Buku Teks
Bryson, John M., author
Jossey-Bass, 2011
Buku Teks
Baker, David, author
Chandos Publishing, 2007
Buku Teks
Poister, Theodore, author
Jossey-Bass, 2003
Buku Teks
Rainey, Hal G., author
John Wiley & Sons, 2003
Buku Teks