Ulrich, Dave
McGraw-Hill, 2013
Buku Teks
edited by Stephen G. Haines
Systems Thinking Press, 2007
Buku Teks
Blanchard, Ken, author
Bareett-Koehler, 2012
Buku Teks
edited by Stephen Haines
Jaico Publishing House, 2007
Buku Teks
Wilkins, David, 1971-, author
Mc-Graw-Hill, 2013
Buku Teks