Macmillan, 1995
Buku Teks
Thoreau, Henry David, 1817-1862, author
The Liberal Arts Press, 1945
Buku Teks
Laski, Harold J., author
Penguin Books, 1937
Buku Teks
Riley, Jonathan
Routledge, 1998
Buku Teks
Nancy Kranich, editor
[American Library association, ], 2001
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