Keohane, Robert O. (Robert Owen), 1941-, author
Longman, 2012
Buku Teks
Beck, Ulrich, author
Malden, MA :Polity Press, 2005
Buku Teks
Mullerson, Rein
Routledge, 1997
Buku Teks
Mullerson, Rein
Routledge, 1997
Buku Teks
Anderson, M.S.
Longman, 1993
Buku Teks