%% You should probably cite rfc2220 instead of this I-D.
@techreport{rfced-info-guenther-00,
    number =    {draft-rfced-info-guenther-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-rfced-info-guenther/00/},
    author =    {Rebecca S. Guenther},
    title =     {{The Application/MARC Content-type}},
    pagetotal = 4,
    year =      1997,
    month =     sep,
    day =       18,
    abstract =  {This memorandum provides a mechanism for representing objects which are files of Machine-Readable Cataloging records (MARC). The MARC formats are standards for the representation and communication of bibliographic and related information. A MARC record contains metadata for an information resource following MARC format specifications. This memo provides information for the Internet community. It does not specify an Internet standard of any kind.},
}