Bermann, George A., author
Thomson, 2003
Buku Teks
Cohen, Morris L., author
West Publishing, 1968
Buku Teks
Ratner, David L., author
West Publishing, 1996
Buku Teks
Leslie, Douglas L., author
West Publishing, 1992
Buku Teks
Folsom, Ralph Haughwout, author
South-Western Publishing, 1996
Buku Teks