%% You should probably cite draft-ietf-appsawg-rfc5451bis instead of this I-D.
@techreport{kucherawy-rfc5451bis-04,
    number =    {draft-kucherawy-rfc5451bis-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-kucherawy-rfc5451bis/04/},
    author =    {Murray Kucherawy},
    title =     {{Message Header Field for Indicating Message Authentication Status}},
    pagetotal = 42,
    year =      2013,
    month =     mar,
    day =       30,
    abstract =  {This document specifies a header field for use with electronic mail messages to indicate the results of message authentication efforts. Any receiver-side software, such as mail filters or Mail User Agents (MUAs), can use this header field to relay that information in a convenient and meaningful way to users, or make sorting and filtering decisions. This document is a candidate for Internet Standard status. {[}RFC Editor: Please delete this notation, as I imagine it will be indicated some other way.{]}},
}