edited by Jacob A. Frenkel and Michael L. Mussa
Auburn House, 1984
Buku Teks
Pears, Iain
Berkley Books , 1999
Buku Teks
Wallensteen, Peter, author
Sage, 2002
Buku Teks
Simangunsong, Anthon, author
Fakultas Teknik Universitas Indonesia, 1998
UI - Skripsi (Membership)
Artikel Jurnal