Jan Voskuil, author
University of Indonesia, Faculty of Humanities, 2015
Artikel Jurnal
White, Robert W., author
Holt, Rinehart and Winston, 1976
Buku Teks
Bauer, Lauria
London : Routledge, 1998
Buku Teks
Morgan, John, 1944-2004, author
Oxford University Press, 1990
Buku Teks
[Springer-Verlag, Springer-Verlag], 2012
eBooks