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 SO
Encyclopedia of bioethics : volume 3
Warren Thomas Reich, editor in chief
Simon & Schuster Macmillan, 1995
 Buku Referensi
Encyclopedia of sociology; Volume 3
edited by Edgar F. Borgatta, Marie L. Borgatta
Macmillan, 1992
 Buku Referensi