%% You should probably cite rfc2648 instead of this I-D.
@techreport{ietf-urn-ietf-09,
    number =    {draft-ietf-urn-ietf-09},
    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-urn-ietf/09/},
    author =    {Ryan Moats},
    title =     {{A URN Namespace for IETF Documents}},
    pagetotal = 30,
    year =      1999,
    month =     may,
    day =       6,
    abstract =  {This document proposes the "ietf" namespace, which consists of the RFC family of documents (RFCs, STDs, FYIs, and BCPs) developed by the IETF and published by the RFC Editor and the minutes of working groups (WG) and birds of a feather (BOF) meetings that occur during IETF conferences. {[}STANDARDS-TRACK{]}},
}