Vacca, John R., editor
Syngress, 2014
eBooks
Schweitzer, James A., author
Butterworth, 1982
Buku Teks
Blanca Jimenez and Joan Rose, editor
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Kanter, Jerome, author
Englewood Cliffs, N.J. Prentice-Hall 1992,
Buku Referensi
Kanter, Jerome, author
Prentice-Hall, 1992
Buku Teks