Bhagwati, Jagdish
Penguin Books, 1969
Buku Teks
Barkin, J. Samuel, 1965-
Cambridge University Press, 2010
Buku Teks SO
Houtte, Hans van
Sweet and Maxwell, 1995
Buku Referensi
Folsom, Ralph Haughwout
[publisher not identified], [date of publication not identified]
Buku Teks
Bertrams, Roeland F.
Kluwer Law International, 1996
Buku Teks