Hill, Christopher, author
LLP, 2003
Buku Teks
Vinogradoff, Paul, 1854-1925, author
Oxford University Press, 1959
Buku Teks
Allen, Michael J., author
Black Stone Press Limited, 1997
Buku Teks
Smith, J. C. (James Cruickshanks), 1867-1946, author
English Language Book Society, 1988
Buku Teks
Ross, J. F. S.
Eyre & Spottiswoode, 1955
Buku Teks