Ward, Dan L., author
[American Management Association, ], 2013
eBooks
Ferguson, Matt, author
McGraw-Hill, 2014
Buku Teks
Kelley, Eugene
Prentice-Hall, 1972
Buku Teks
Lax, David A.
The Free Press, 1986
Buku Teks
Cook, Thomas A., author
American Management Association, 2007
eBooks