%% You should probably cite rfc7410 instead of this I-D.
@techreport{ietf-appsawg-authres-ptypes-registry-04,
    number =    {draft-ietf-appsawg-authres-ptypes-registry-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-ietf-appsawg-authres-ptypes-registry/04/},
    author =    {Murray Kucherawy},
    title =     {{A Property Types Registry for the Authentication-Results Header Field}},
    pagetotal = 5,
    year =      2014,
    month =     sep,
    day =       30,
    abstract =  {This document updates RFC 7001 by creating a registry for property types in the Authentication-Results header field, used in email authentication work, rather than limiting participants to using the original, small set of fixed values.},
}