Lee, Stuart D., author
Facet, 2002
Buku Teks
edited by Matt Bonass, Michael Rudd
Globe Law and Business, 2010
Buku Teks
ed. by Michael J. Kennish
CRC Press, 1994
Buku Referensi
McPartland, Joseph F., author
McGraw-Hill, 1984
Buku Referensi
Douglas-Young, John, author
Parker Publishing Company, 1979
Buku Referensi