Oceana Publications, 1993
Buku Teks
Mayss, Abla, author
Ashgate, 1998
Buku Referensi
Fabio, Massimo, author
Kluwer Law International, 2012
Buku Teks
Folsom, Ralph Haughwout, author
West Group, 1995
Buku Teks
Eeckhout, Piet
Clarendon Press, 1994
Buku Teks