Fierke, K. M. (Karin M.), author
Polity Press, 2015
Buku Teks
Klabbers, Jan, author
Cambridge University Press, 2002
Buku Teks
Fenwick, Charles G., author
Appleton-Century-Crofts, 1948
Buku Teks
Shaw, Malcolm N. (Malcolm Nathan), 1947-, author
Cambridge, 2003
Buku Teks
Holsti, Kalevi J., author
Prentice-Hall, 1977
Buku Teks