McDermott, Constance, author
Earthscan, 2010
Buku Teks
Kluwer Law International, 1996
Buku Teks
Harvey, L.D. Danny, author
Prentice-Hall, 2000
Buku Teks
Cunningham, William P., author
McGraw-Hill, 2001
Buku Teks
Cunningham, William P., author
McGraw-Hill, 2003
Buku Teks