%% You should probably cite rfc2060 instead of this I-D.
@techreport{crispin-imap-base-06,
    number =    {draft-crispin-imap-base-06},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-crispin-imap-base/06/},
    author =    {Mark Crispin},
    title =     {{Internet Message Access Protocol - Version 4rev1}},
    pagetotal = 82,
    year =      1996,
    month =     oct,
    day =       7,
    abstract =  {The Internet Message Access Protocol, Version 4rev1 (IMAP4rev1) allows a client to access and manipulate electronic mail messages on a server. {[}STANDARDS-TRACK{]}},
}