Griffith, Martin
Routledge, 2002
Buku Teks
Cambridge University Press, 2019
eBooks
edited by Beth A. Simmons and Richard H. Steinberg
Cambridge University Press, 2006
Buku Teks
Kroker, Arthur, 1945-
Polity Press, 2014
Buku Teks
edited by Bruce Clarke, Manuela Rossini
Cambridge University Press, 2017
Buku Teks