%% You should probably cite rfc1654 instead of this I-D.
@techreport{ietf-bgp-bgp4-09,
    number =    {draft-ietf-bgp-bgp4-09},
    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-bgp-bgp4/09/},
    author =    {Yakov Rekhter and Tony Li},
    title =     {{A Border Gateway Protocol 4 (BGP-4)}},
    pagetotal = 56,
    year =      1994,
    month =     may,
    day =       4,
    abstract =  {This document defines an inter-autonomous system routing protocol for the Internet. {[}STANDARDS-TRACK{]}},
}