Artikel Jurnal
United Nations Development Program
Jakarta: United Nations Development Program, 1993,
Buku Referensi
United Nations Development Program
Jakarta: United Nations Development Program, 1993,
Buku Referensi
United Nations Development Program
Jakarta: United Nations Development Program, 1994,
Buku Referensi
edited by Mohamed Ariff
Institute of Southeast Asian Studies, 1998
Buku Teks SO