edited by Lois Holzman, John Morss
Routledge, 2000
Buku Teks
Etzioni, Amitai, author
Macmillan, 1967
Buku Teks
edited by Bob Pease and Jan Fook
Routledge, 1999
Buku Teks
Malpas, Simon, author
Routledge, 2005
Buku Teks
Easton, David, author
John Wiley & Sons, 1965
Buku Teks