Cooper, Robert K.
Orion Business Books, 1997
Buku Teks
Lynn, Adele B.
American Management Association, 2002
Buku Teks
Lynn, Adele B.
American Management Association, 2002
eBooks
Lynn, Adele B.
American Management Association, 2005
eBooks
Wall, Bob
American Management Association;;, 2007
eBooks