%% You should probably cite draft-ietf-httpapi-link-template instead of this I-D.
@techreport{nottingham-link-template-03,
    number =    {draft-nottingham-link-template-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-nottingham-link-template/03/},
    author =    {Mark Nottingham},
    title =     {{The Link-Template HTTP Header Field}},
    pagetotal = 5,
    year =      2021,
    month =     aug,
    day =       31,
    abstract =  {This specification defines the Link-Template HTTP header field, providing a means for describing the structure of a link between two resources, so that new links can be generated.},
}