Wheat, Dale, author
Springer, 2012
eBooks
Paulson, Edward, author
Prenada Media, 2003
Buku Teks
Rickertsen, Rick, author
[American Management Association, ], 2001
eBooks
Zimmerman, Gary, author
John Wiley & Sons, 1980
Buku Teks
Solovic, Susan Wilson, 1958-, author
Amacom, 2012
Buku Teks