%% You should probably cite rfc7237 instead of this I-D.
@techreport{ietf-httpbis-method-registrations-12,
    number =    {draft-ietf-httpbis-method-registrations-12},
    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-httpbis-method-registrations/12/},
    author =    {Julian Reschke},
    title =     {{Initial Hypertext Transfer Protocol (HTTP) Method Registrations}},
    pagetotal = 7,
    year =      2013,
    month =     aug,
    day =       6,
    abstract =  {This document registers those Hypertext Transfer Protocol (HTTP) methods which have been defined in standards-track RFCs before the IANA HTTP Method Registry was established.},
}