williams, Basil
Oxfrold at the claredon Press, [c.1962]
Buku Teks
Parkin, Paul, author
Sage , 2010
Buku Teks
Hammersley, Martyn, author
Paul Chapman Publishing, 2002
Buku Teks
Mike Luck, Rob Pocock, Mike Tricker, editor
Routledge, 2000
Buku Teks
Frindland, L, author
Foreign Languages Publishing House, 1956
Buku Teks