Kluwer Law International , 1996
Buku Teks
Christoph Herrmann
Springer, 2012
eBooks
Michael N. Schmitt, Louise Arimatsu
T.M.C. Asser Press, 2012
eBooks
Fox, James R.
Oceana Publication, 1992
Buku Referensi
edited by William E. Butler
Sijthoff & Noordhoff, 1980
Buku Teks SO