Krasner, Stephen D., author
Routledge , 2009
Buku Teks
Dulfano, Celia
Jassey-Bass , 1992
Buku Teks
Huntington, Samuel P., author
Belknap Press of Harvard University Press, 1959
Buku Teks
Beitz, Charles R
Princeton University Press, 1979
Buku Teks
Kegley, Charles W. (Charles William), Jr., author
St. Martin's Press, 1995
Buku Teks