Kirby, David K., author
Gale Research, 1975
Buku Referensi
Wright, Lyle H.
Huntington Library, 1978
Buku Referensi
Hilfer, Tony, author
Longman, 1992
Buku Teks
Melville, Herman, 1819-1891, author
Alfred A. Knopf, 1997
Buku Teks
Lee, Brian, author
Longman , 1993
Buku Teks