Jans, Jan H.
Europa Law Publishing, 2000
Buku Teks
Bunger, Dirk
Springer, 2012
eBooks
Kiss, Alexandre Charles, 1925-
Grotius Publications, 1993
Buku Referensi
Cassotta, Sandra
Kluwer Law International , 2012
Buku Teks SO
edited by Robert M. Maclean
[Publisher not identified], [Date of publication not identified]
Buku Teks SO