The illustrated History of Oxford University
editor, John Prest
Oxford University Press, 1993
 Buku Referensi
Oxford illustrated encyclopedia of the arts
Norwich, John Julius, editor
Oxford University Press, 1990
 Buku Referensi
The Oxford dictionary of quotations / Oxford University
London, Oxford University Press
 Buku Referensi
The Oxford illustrated history of modern Europe
edited by T.C.W. Blanning
Oxford University Press, 1996
 Buku Teks SO
The Concise Oxford dictionary of quotations
edited by Angela Partington
Oxford University Press, 1993
 Buku Referensi