Jean-Francois Bellis, Porter Ellioty, Van Bael, editor
Thomson Reuters, 2011
Buku Teks
Andrew Horrocks, Clyde & Co LLP, editor
Thomson Reuters, 2011
Buku Teks
edited by John R. Bowen and Roger Petersen
Cambridge University Press, 1999
Buku Teks
Estell, Kenneth
Visible Ink Press, 1994
Buku Teks
by Colin M. Turnbull
Simon and schuster, 1962
Buku Teks