Newport, Cal
Noura Books, 2016
Buku Teks
Kurnit, Paul
[American Management Association;, ], 2011
eBooks
Gutsche, Jeremy, 1978-
Crown Business, 2015
Buku Teks
Burkus, David, 1983-
Jossey-Bass, 2014
Buku Teks
Flaum, Jonathon A.
American Management Association;, 2007
eBooks