editor in chief, Seymour Martin Lipset
Routledge, 1995
Buku Referensi
selected and introduced by Roy Harris
Routledge/Thoemmes Press, 1995
Buku Referensi
Murdoch, James, author
Routledge , 1996
Buku Referensi
edited by William Bridgwater dan Seymour Kurtz
Columbia University Press, 1963
Buku Referensi
Mukherji, S.M., author
New Age International , 1997
Buku Teks