Zed Books Ltd., 1988
Buku Teks
Steiner, Henry J., author
Oxford University Press, 2000
Buku Teks
Janet Marstine, editor
Blackwell Publishing, 2010
Buku Teks
Wills, Joe, author
Cambridge University Press , 2017
Buku Teks
Bennet, Tony, author
Routledge, 1997
Buku Teks