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