Pugh, David G., author
American Management Association;, 2005
eBooks
Parker, Marty, author
McGraw-Hill, 2012
Buku Teks
Tyreman, David, author
American Management Association;, 2009
eBooks
Sherman, Andrew J., author
Amacom, 2011
Buku Teks
Sherman, Andrew J., author
[American Management Association, ], 2004
eBooks