@misc{9621,
  author = {William Barker and Annabelle Lee},
  title = {Guide for Mapping Types of Information and Information Systems to Security Categories (2 vols.)},
  year = {2004},
  month = {2004-06-10},
  publisher = {Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}