%% You should probably cite rfc8118 instead of this I-D.
@techreport{hardy-pdf-mime-00,
    number =    {draft-hardy-pdf-mime-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-hardy-pdf-mime/00/},
    author =    {Matthew Hardy and Larry M Masinter and Duff Johnson},
    title =     {{The application/pdf Media Type}},
    pagetotal = 8,
    year =      2014,
    month =     jul,
    day =       21,
    abstract =  {PDF, the 'Portable Document Format', is an ISO standard (ISO 32000-1:2008) defining a final-form document representation language in use for document exchange, including on the Internet, since 1993. This document provides an overview of the PDF format and updates the media type registration of 'application/pdf'. It replaces RFC 3778.},
}