Madden, Edward H.
University Of Washington Press, 1968
Buku Teks
Hall, Robert T., author
Harper and Row, 1971
Buku Teks
Thoreau, Henry David, 1817-1862, author
The American Library, [1957]
Buku Teks
Foner, Philip S.
International Publishers, 1955
Buku Teks
Forrest E. Baird, editor
Prentice-Hall, 1997
Buku Teks SO