%% You should probably cite rfc7061 instead of this I-D.
@techreport{sinnema-xacml-media-type-06,
    number =    {draft-sinnema-xacml-media-type-06},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-sinnema-xacml-media-type/06/},
    author =    {Remon Sinnema and Erik Wilde},
    title =     {{eXtensible Access Control Markup Language (XACML) XML Media Type}},
    pagetotal = 8,
    year =      2013,
    month =     sep,
    day =       12,
    abstract =  {This specification registers an XML-based media type for the eXtensible Access Control Markup Language (XACML).},
}