Martinus Nijhoff , 1987
Buku Teks
Grosz, Stephen
Sweet and Maxwell, 2000
Buku Teks
Robertson, Arthur Henry, 1913-
Manchester University Press, 1993
Buku Teks
Council of Europe
Martinus Nijhoff Publishers, 1990
Buku Referensi
Dijk, P. van, editor
Kluwer Law & Taxation Publishers, 1990
Buku Teks