Sethi, Ashok, author
Quintessence, 2012
Buku Teks
Albrecht, Karl, 1941-, author
Josseey-Bass, 2007
Buku Teks SO
Allan Jones [and others]
Prentice-Hall, 2000
Buku Teks
ed. by Michael J. Kennish
CRC Press, 1994
Buku Referensi
Bishop, Matt, author
Addison-Wesley, 2003
Buku Teks