http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Su guía sobre la cobertura de recetas médicas de Medicare
Centers for Medicare & Medicaid Services (U.S.)
Title from title screen (viewed on Apr. 5, 2007).
Mode of access: Internet from the Medicare web site. Address as of 4/5/07: http://www.medicare.gov/Publications/Pubs/pdf/11109%5FS.pdf; current access available via PURL.