Artikel Jurnal
Nagoya University of Commerce and Business,
Majalah, Jurnal, Buletin
edited by John Feather and Paul Sturges
Roudledge, 1997
Buku Referensi
ed. by John Feather, Paul Sturges
Routledge, 2003
Buku Referensi
Gunton, Tony, author
NCC Blackwell, 1993
Buku Teks