%% You should probably cite rfc3196 instead of this I-D.
@techreport{ietf-ipp-implementers-guide-v11-02,
    number =    {draft-ietf-ipp-implementers-guide-v11-02},
    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-ipp-implementers-guide-v11/02/},
    author =    {Thomas N. Hastings and Carl Kugler and Carl-Uno Manros and Henrik Holst and Peter Zehler},
    title =     {{Internet Printing Protocol/1.1: Implementor's Guide}},
    pagetotal = 96,
    year =      2001,
    month =     feb,
    day =       5,
    abstract =  {This document is one of a set of documents, which together describe all aspects of a new Internet Printing Protocol (IPP). This memo provides information for the Internet community.},
}