White, Andrew, author
Facet Publishing, 2006
Buku Teks
edited by G.E. Gorman ; associate editor, Daniel G. Dorner
Facet Publishing , 2004
Buku Teks
Vacca, John R., editor
Syngress, 2014
eBooks
Kanter, Jerome, author
Englewood Cliffs, N.J. Prentice-Hall 1992,
Buku Referensi
Kanter, Jerome, author
Prentice-Hall, 1992
Buku Teks