Crawford, Emily, author
Cambridge University Press , 2015
Buku Teks
Haug, Hans
Henry Dunant Institute, 1993
Buku Teks
Universitas Indonesia, 1997
UI - Skripsi (Membership)
Kolb, Robert, author
USA Edward Elgar, 2014
Buku Teks
Solis, Gary D., author
Cambridge University Press, 2016
Buku Teks