The encyclopedia of democracy : volume I
editor in chief, Seymour Martin Lipset
Routledge, 1995
 Buku Referensi
The Encyclopedia of religion; Vol. I
edited by Mircea Eliade
Macmillan, 1987
 Buku Referensi
The Columbia encyclopedia; Volume I
edited by William Bridgwater dan Seymour Kurtz
Columbia University Press, 1963
 Buku Referensi
World press encyclopedia; Volume I
edited by George Thomas Kurian
Facts on File, 1982
 Buku Referensi
Encyclopedia of American social history : volume I
Mary Kupiec Cayton, Elliott J. Gorn, Peter W. Williams, editors
Charles Scribner's Sons, 1993
 Buku Referensi