http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Centers for Disease Control and Prevention (U.S.)
Title from title screen (viewed on Sept. 6, 2006).
Mode of access: Internet from the CDC web site. Address as of 7/2/07: http://www.cdc.gov/std/HPV/STDFact-HPV.htm (text version), http://www.cdc.gov/std/HPV/hpv.pdf (PDF version); current access is available via PURL.