Palan, Ronen, author
Pinter, 1999
Buku Teks
edited by Michael Stohl and Harry R. Targ
Schenkman Publishing Company, 1982
Buku Teks
Beck, Ulrich, author
Malden, MA :Polity Press, 2005
Buku Teks
Cohn, Theodore H., author
Longman, 2003
Buku Teks
edited by Lorraine Eden
St. Martin's Press, 1993
Buku Teks