Rosenberg, Betty
Libraries Unlimited, 1982
Buku Referensi
Kirby, David K., author
Gale Research, 1975
Buku Referensi
Smith, Betty
Perrenial, 1998
Buku Teks
Melville, Herman, 1819-1891, author
Alfred A. Knopf, 1997
Buku Teks
Brin, David, author
Bantam Books, 2002
Buku Referensi