%% You should probably cite rfc6596 instead of this I-D.
@techreport{ohye-canonical-link-relation-05,
    number =    {draft-ohye-canonical-link-relation-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-ohye-canonical-link-relation/05/},
    author =    {Maile Ohye and Joachim Kupke},
    title =     {{The Canonical Link Relation}},
    pagetotal = 8,
    year =      2012,
    month =     mar,
    day =       5,
    abstract =  {RFC 5988 specifies a way to define relationships between links on the web. This document describes a new type of such a relationship, "canonical", to designate an Internationalized Resource Identifier (IRI) as preferred over resources with duplicative content. This document is not an Internet Standards Track specification; it is published for informational purposes.},
}