Chandler, Daniel, author
Routledge, 2002
Buku Teks
Macionis, John J., author
Pearson Prentice Hall, 2000
Multimedia
International Engineering Consortium
Professional Education International, 2004
eBooks
Ambrose, Timothy, author
Routledge, 2012
Buku Teks
Lauer, David A., 1955-2011, author
Thomson Learning, 1995
Buku Teks