Topham, Alfred F.
Stevens and Sons, Limited, 1933
Buku Teks
Mather, L. C. (Leonard Charles)
Waterlow & sons limited, 1972
Buku Teks
Steff M. Bartman, editor
Kluwer law, 2006
Buku Teks
Ellinger, E.P., author
Clarendon Press, 1994
Buku Teks
Prentice-Hall, 1962
Buku Teks