Grote, Dick, author
[American Management Association, ], 2002
eBooks
Rosen, Anita, author
Amacom Books, 2000
Buku Teks
Taylor, James, author
American Management Association, 2006
eBooks
[publisher not identified], [date of publication not identified]
Buku Teks
Novisti Press, [date of publication not identified]
Buku Teks