Stern, Jessica
London, 1999
Buku Teks
Wilson, Hugo, author
Dorling Kindersley, 1993
Buku Referensi
A & C Black Publishers, 2006
Buku Referensi
Day, Paul, author
Chartwell Books, 2015
Buku Referensi
Stern, Jessica
Harvard University Press, 1999
Buku Teks