Hudson, Alastair, author
Cavendish Publishing Limited, 2003
Buku Teks
Scott, Austin Wakeman, 1884-1981, author
Little, Brown, 1963
Buku Teks
Schaber, Gordon D., author
West Publishing, 1990
Buku Teks
Folsom, Ralph Haughwout, author
West Group, 1999
Buku Teks
Maraist, Frank L., author
West Publishing, 1996
Buku Teks