Edy Irwansyah, supervisor
Springer, 2012
eBooks
Karen Elizabeth Bishop, editor
Routledge, 2016
Buku Teks
Wilson, Graham S., Sir
The Athlone Press, University of London, 1967
Buku Teks
Keller, Edward A.
Pearson-Prentice Hall, 2006
Buku Teks
New York: W.W.Norton & Company, 1988,
Buku Referensi