United Nations
United Nations, 2002
Buku Teks
Cambridge University Press, 2018
eBooks
Bonanomi, Elisabeth Burgi, author
Edward Elgar Publishing, 2015
Buku Teks
Jamie Benidickson ... [et al.]., editor
Edward Elgar, 2011
Buku Teks
Rodrigues, Edson Beas, Jr., author
Cambridge University Press,, 2012
Buku Teks