Liu, Helen, editor
Design Media Publishing, ©2010., 2012
Buku Referensi
Peterson, Susan, author
Laurence King Publishing, 2000
Buku Referensi
Lessing, Doris
Simon and Schuster, 1961
Buku Teks
Salzman, L.F., author
Oxford University Press, 1955
Buku Teks
Eliot, George, author
Leopard Books, 1994
Buku Teks