Bolles, Dennis L., author
American Management Association, 2007
eBooks
Lock, Dennis, author
Gower, 2003
Buku Teks
Moder, Joseph J., author
Van Nostrand Reinhold, 1970
Buku Teks
Russell, Doug, author
Amacom, 2011
Buku Teks
Heagney, Joseph, author
AMACOM, 2012
Buku Teks