The encyclopedia of democracy : volume III
editor in chief, Seymour Martin Lipset
Routledge, 1995
 Buku Referensi
Encyclopedia of ethics : volume III
Lawrence C. Becker, Charlotte B. Becker, editors
Routledge, 2001
 Buku Referensi
Hastings, James
Encyclopedia of religion and ethics; Volume III
T&T Clark, 1980
 Buku Referensi
Encyclopedia of world cultures; Volume III
edited by Paul Hockings
G.K. Hall, 1992
 Buku Referensi
Encyclopedia of chemical reactions; Volume III
edited by C.A. Jacobson
Reinhold Pub. Corp., 1959
 Buku Referensi