Oxford University
London, Oxford University Press
Buku Referensi
edited by Angela Partington
Oxford University Press, 1993
Buku Referensi
London, Oxford University Press
Buku Referensi
Sharpe, Gareth
Guinness Publishing, 1994
Buku Referensi
J. K. Moorhead, Charles Lee, editor
J.M. Dent and Sons , 1932
Buku Referensi