Goulston, Mark, author
American Management Association, 2010
eBooks
Wolfe, Rebecca Luhn, author
PPM, 2001
Buku Teks
Moran, Robert T., author
Gulf, 1991
Buku Teks
Galloway, Lee, author
Alexander Hamilton Institute, 1914
Buku Teks
Lederman, Michelle Tillis, author
[American Management Association;, ], 2012
eBooks