Findley, Roger W., author
West Publishing, 1996
Buku Teks
Barron, Jerome A., author
West, 2009
Buku Teks
Ramsey, Sarah H., author
Thomson/West, 2011
Buku Teks
Guruswamy, Lakshman D., author
Thomson/West, 2012
Buku Teks
Epstein, David G., author
West Publishing, 1981
Buku Teks