Steinby, Torsten, author
Government, 1971
Buku Teks
Library Association, 1991
Buku Teks
Adler, Mortimer Jerome, 1902-2001, author
Doubleday, 1958
Buku Teks
Gordon, Scott
Columbia University Press, 1980
Buku Teks
Warburton, Nigel, 1962-, author
Routledge, 2001
Buku Teks