Perpustakaan Nasional RI, 1998
Buku Referensi
Greeley, Andrew M., author
Erlangga, 1988
Buku Teks
Masyhuri, author
Program Pascasarjana Universitas Indonesia, 2005
UI - Tesis (Membership)
Mary Bryden
Routledge, 2001
Buku Teks
editor, James F. Fox
Archipelago Press, 1999
Buku Referensi