May, James R, author
Cambridge University Press, 2014
eBooks
McCaffrey, Stephen C., author
Thomson/West, 2009
Buku Teks
edited by W. Lang, H. Neuhold,K. Zemanek
Graham & Trotman / Martinus Nijhoff, 1995
Buku Referensi
Guruswamy, Lakshman D., author
Thomson/West, 2012
Buku Teks
by Philippe Sands [and others]
Cambridge University Press, 2012
Buku Teks