edited by Markus Hattstein, Peter Delius
Konemann, 2000
Buku Referensi
Infold, Tim, 1948, author
Routledge, 2013
Buku Teks
Rowland, Benjamin
Penguin Books, 1967
Buku Teks
Blair, Sheila
Yale University Press, 1994
Buku Teks
Knapp, Stephen, author
Rockport Publishers, 1998
Buku Teks