Artikel Jurnal
Melda Kamil Ariadno, author
Diadit Media, 2007
Buku Teks
Helnkelman , Edward G, author
PPM, 2002
Buku Teks
Kantor Penerangan PBB, [date of publication not identified]
Buku Teks
Rory Arba Delano Mogot, author
Universitas Indonesia, 2004
UI - Tesis Membership