Folsom, Ralph Haughwout, author
West Group, 1995
Buku Teks
Cini, Michelle, author
Oxford Univesity Press, 2010
Buku Teks
Fabio, Massimo, author
Kluwer Law International, 2012
Buku Teks
El-Agraa, Ali M, author
Prentice-Hall, 2001
Buku Teks
Thody, Philip, author
Routledge , 1997
Buku Teks