%% You should probably cite rfc5612 instead of this I-D.
@techreport{eronen-enterprise-number-documentation-01,
    number =    {draft-eronen-enterprise-number-documentation-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-eronen-enterprise-number-documentation/01/},
    author =    {David Harrington and Pasi Eronen},
    title =     {{Enterprise Number for Documentation Use}},
    pagetotal = 4,
    year =      2009,
    month =     mar,
    day =       2,
    abstract =  {This document describes an Enterprise Number (also known as SMI Network Management Private Enterprise Code) for use in documentation. This memo provides information for the Internet community.},
}