Phelan, Margaret
Blakstone Press Limited, 1997
Buku Teks
Warr, George, author
Sweet & Maxwell, 1994
Buku Teks
Supperstone, Michael, author
Longman, 1994
Buku Teks
Juss, Satvinder S., author
Mansel, 1993
Buku Teks
Maideus, Melinda
Facts on File, 1981
Buku Teks