Reed, Lucy
Wolters Kluwer, 2011
Buku Teks
Yetty Komalasari Dewi
2014
Artikel Jurnal
Stephan W. Schill
Cambridge University Press, 2010
eBooks
Parra, Antonio R.
Oxford Univesity Press, 2012
Buku Teks
edited by Guillermo Aguilar Alvarez and W. Michael Reisman
Martinus Nijhoff, 2008
Buku Teks