Andrew Christie, Stephen Gare
Blackstone Press, 2001
Buku Teks
Thomas, Meryl, author
Blackstone Press LTD, 2000
Buku Teks
Colston, Catherine, author
Cavendish Publishing, 1999
Buku Teks
Roger E. Schechter, editor
WEST, 2011
Buku Teks
World Intelectual Property Organization, 1989
Buku Teks