May, Lola June
The Free Press, 1970
Buku Teks
Cartledge, Gwendolyn, author
Allyn and Bacon, 1995
Buku Teks
Shaffel, Fannie R., author
Prentice-Hall, 1967
Buku Teks
Farris, Pamela J., author
New York, 2001
Buku Teks
edited by R. Meurig Evans
Macmillan, 1975
Buku Teks