http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Richad D. De Veaux, Paul F. Velleman, David E. Bock.
With CD-ROM : Stats : data and models / Richad D. De Veaux, Paul F. Velleman, David E. Bock