Tandian, David
Steens and Sons, 1985
Buku Teks
Chao, Wu
Kluwer Law International, 1996
Buku Teks
Gavouneli, Maria
Graham & Trotman, 1995
Buku Teks SO
Lammers, J. G.
Martinus Nijhoff Publishers, 1984
Buku Teks
McLoughlin, J.
Manchester University Press, 1972
Buku Teks SO