McManis, Charles R., author
West Publishing, 1992
Buku Teks
Schecter, Roger E.
West Pub. Co, 1993
Buku Teks
Folsom, Ralph Haughwout, author
[publisher not identified], 2000
Buku Teks
Folsom, Ralph Haughwout, author
South-Western Publishing, 1996
Buku Teks
McManis, Charles R., author
Thomson , 2004
Buku Teks