Estell, Kenneth
Visible Ink Press, 1994
Buku Teks
Slocum, Stephanie A., author
Syracuse University Press, 2003
Buku Teks
Tocqueville, Alexis De, author
The Bantam Classic, 2000
Buku Teks
Wilson, Chris, author
University of California Press, 2003
Buku Teks
Gibson, Charles, author
Harper & Row, 1966
Buku Teks