Litta, Henriette, author
VS Verlag, 2012
eBooks
Sage Publications Ltd, 1979
Buku Teks
Knapen, Han, author
KITLV Press, 2001
Buku Teks
Flores, Jamil Maidan
The ASEAN Secretariat, 1999
Buku Teks
edited by Gun Lauritzson
Lund University, 1992
Buku Referensi