Ferguson, John Alexander, author
National Library of Australia, 1977
Buku Referensi
Ferguson, John Alexander, author
National Library of Australia, 1977
Buku Referensi
edited by William Bridgwater dan Seymour Kurtz
Columbia University Press, 1963
Buku Referensi
Toynbee, Arnold J., author
Oxford University Press, 1956
Buku Teks
editor in chief, Seymour Martin Lipset
Routledge, 1995
Buku Referensi