edited by, Alan D. Burnett and Peter J. Taylor
John Wiley & Sons, 1981
Buku Teks
East, W. Gordon
Methuen, 1950
Buku Teks
Glassner, Martin Ira
Unwin Hyman, 1990
Buku Teks
Cox, Kevin R.
Blackwell, 2002
Buku Teks
Norcliffe, Glen, author
Routledge, 2015
Buku Teks