Pescatore, Pierre
A.W. Sijthoff, 1974
Buku Teks
Brinkhorst, L. J., author
Kluwer Law & Taxation Publishers, 1969
Buku Teks
Daltrop, Anne, author
Longman, 1982
Buku Teks
Paxton, John, author
Macmillan, 1976
Buku Referensi
Bogaert, Geert
Graham & Trotman/M. Nijhoff, 1993
Buku Teks