Slapper, Gary
Routledge, 2010-2011
Buku Teks
Juilland, Alphonse, author
Mouton, 1973
Buku Teks
Jackson, Michael, author
Prentice-Hall, 1983
Buku Teks
Cambridge University Press, 2005
eBooks
Giegerich, Heinz J.
Cambridge University Press, 1995
Buku Teks