Faulkner, Mike, author
John Wiley & Sons, 2003
Buku Teks
Carter, Neil
Routledge, 1995
Buku Teks
Greiner, Joy M., author
Libraries Unlimited, 2004
Buku Teks
Fadel Muhammad, 1952-, author
Kompas Gramedia, 2008
Buku Teks
Hall, John W., author
Princeton University press, 1973
Buku Teks