edited by Peter Taylor-Gooby
Oxford University Press, 2013
Buku Teks
Edited by John Hogan, Michael Howlett
Palgrave Macmillan, 2015
Buku Teks
edited by Wil A.H. Thissen and Warren E. Walker
Springer, 2013
Buku Teks
Gilbert, Bentley B.
B.T. Bastford, Ltd., 1970
Buku Teks
Smith, Kevin, author
Westview Press, Boston, Massachusetts : Credo Reference, 2013
Buku Teks