@misc{153256,
  author = {J Favreau},
  title = {Federal Implementation Guideline for Electronic Data Interchange ASC X12 004010 Transaction Set 850 Purchase Order Implementation Convention},
  year = {1998},
  month = {1998-06-01},
  publisher = {Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}