Teubner, Gunther, author
Oxford University Press, 2014
Buku Teks
Andrews, William G.
D.van Nostrand Company,Inc., 1968
Buku Teks
Petra Dobner, Martin Loughlin, editors
Oxford University Press, 2012
Buku Teks
Sklair, Leslie, author
Buku Teks
Hardin, Russell
Oxford University Press, 1999
Buku Teks