Howes, Norman R., author
[American Management Association, ], 2001
eBooks
Lock, Dennis, author
Gower, 2003
Buku Teks
Boy Subirosa Sabarguna, author
UI-Press, 2011
Buku Teks
Russell, Doug, author
Amacom, 2011
Buku Teks
Heagney, Joseph, author
AMACOM, 2012
Buku Teks