Pinto, Jeffrey K., author
Van Nostrand Reinhold, 1995
Buku Teks
Rika Andayani, author
Fakultas Teknik Universitas Indonesia, 2003
UI - Tesis (Membership)
Cagle, Ronald B., author
[American Management Association, ], 2005
eBooks
Kendrick, Tom, author
American Management Association, 2004
eBooks
Lewis, James P., author
Amacom, 1997
Buku Teks