Artikel Jurnal
Hawkins, David E.
Palgrave Macmillan, 2006
Buku Teks
edited by Mike Murray, Andrew Dainty
Taylor and Francis, 2009
Buku Teks
Yakovleva, Natalia, author
Ashgate, 2005
Buku Teks
Yakovleva, Natalia, author
Ashgate Publishing, 2005
Buku Teks