Taylor, Paul A., 1967-, author
Routledge, 1999
Buku Teks
Zizek, Slavoz, author
Polity, 2014
Buku Teks
Nye, David E.
MIT Press , 1994.
Buku Teks
Leighton, Angela
Cambridge University Press , 1984
Buku Teks
Charles W. Eliot, edited
P. F. Collier & Son Corporation, 1959 ; 1969
Buku Referensi