Fish, Carld Russel, 1876-1932
Greenwood Press, 1983
Buku Teks
Rose, Anne C.
Twayne Publishers, 1995
Buku Teks
Tocqueville, Alexis De, author
Oxford University Press, 1961
Buku Teks
Harris, Marvin, 1927-2001, author
Simon and Schuster, 1982
Buku Teks
Tocqueville, Alexis De, author
The New American Library, 1963
Buku Teks