Graveson, R.H.
Sweet & Maxwell, 1969
Buku Teks
Cheshire, G. C.
At The Clarendon Press, 1952
Buku Teks
Cheshire, G.C.
Clarendon Press, 1956
Buku Teks
Chesire G.C.
At The Clarendon Press, 1961
Buku Teks
Collier, John Greenwood
Cambridge University Press, 1987
Buku Teks