Association of Southeast Asian Nations
ASEAN Secretariat, 2002
Buku Teks
Ashbacher, Charles, author
Hexis, 2005
Buku Teks
Association of Southeast Asian Nations
ASEAN Secretariat, 2001
Buku Referensi
Association of Southeast Asian Nations
ASEAN Secretariat, 2008
Buku Referensi
Sackheim, George I., author
Stipes , 1993
Buku Teks