Canals, Jordi, author
Oxford University Press , 1997
Buku Teks
Ririn Breliastiti, author
2002
UI - Tesis (Membership)
Bikker, Jacob A., author
Routledge, Taylor & Francis Group, 2008
Buku Teks
Artikel Jurnal
Hankes, Elmer Joseph
The Hankes Foundation, 1992
Buku Teks