Encyclopedia of violence, peace & conflict; Volume 1
editor-in-chief, Lester Kurtz
Academic Press, 1999
 Buku Referensi
Encyclopedia of violence, peace & conflict; Volume 2
editor-in-chief, Lester Kurtz
Academic Press, 1999
 Buku Referensi
Christie, Daniel J.
Peace, conflict, and violence
Prentice-Hall, 2001
 Buku Teks
Encyclopedia of knowledge : volume 3
Grolier Incorporated, 1991
 Buku Referensi
The Encyclopedia Americana : volume 3
Grolier, 1994
 Buku Referensi