Schnitzer, Adolf F.
Verlag Fur Recht und Gesellschaft, 1961
Buku Teks
Sunarjati Hartono, author
Citra Aditya Bakti, 1991
Buku Teks
Delaume, Georges R.
Oceana Publication, 1961
Buku Teks
Cruz, Peter de
Kluwer, 1993
Buku Teks
Ehrmann, Henry W., author
Prentice-Hall, 1976
Buku Teks