Kluwer Law International , 1996
Buku Teks
edited by W. Lang, H. Neuhold,K. Zemanek
Graham & Trotman / Martinus Nijhoff, 1995
Buku Referensi
Middleton, Neil, author
Pluto Press, 1993
Buku Teks
Yasuhiro Shigeta, author
Wolters Kluwer, 2010
Buku Teks
United Nations
United Nations, 2002
Buku Teks