%% You should probably cite rfc6755 instead of this I-D.
@techreport{ietf-oauth-urn-sub-ns-04,
    number =    {draft-ietf-oauth-urn-sub-ns-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-oauth-urn-sub-ns/04/},
    author =    {Brian Campbell and Hannes Tschofenig},
    title =     {{An IETF URN Sub-Namespace for OAuth}},
    pagetotal = 7,
    year =      2012,
    month =     jun,
    day =       22,
    abstract =  {This document establishes an IETF URN Sub-namespace for use with OAuth related specifications.},
}