Malek, Jaromir, author
Andre Deutsch, 2010
Buku Referensi
Coleman, Janet, author
Blackwell Publishers, Ltd, 2000
Buku Teks
Liu, Jeeloo, author
Blackwell Publishing, 2008
Buku Teks
Martin, Thomas R.
Yale University Press, 1996
Buku Teks
Peyser, Ethel, author
G.P. Putnam's Sons, 1956
Buku Teks