Blackman, Barbara
Viking, 1998
Buku Teks
Blackman, Barbara
Penguin Books , 1997
Buku Teks
Hackforth-Jones, Penne
Penguin Books, 1989
Buku Teks
Hart-Smith, William
Butterfly Books, 1991
Buku Teks
Putnam, Emily James, author
Univesity of Chicago, 1970
Buku Teks