%% You should probably cite rfc7193 instead of this I-D.
@techreport{turner-application-cms-media-type-05,
    number =    {draft-turner-application-cms-media-type-05},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-turner-application-cms-media-type/05/},
    author =    {Sean Turner and Russ Housley and Jim Schaad},
    title =     {{The application/cms media type}},
    pagetotal = 9,
    year =      2013,
    month =     jun,
    day =       21,
    abstract =  {This document registers the application/cms media types for use with the corresponding CMS (Cryptographic Message Syntax) content types.},
}