%% You should probably cite draft-ietf-jmap-tasks instead of this I-D.
@techreport{baum-jmap-tasks-00,
    number =    {draft-baum-jmap-tasks-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-baum-jmap-tasks/00/},
    author =    {Joris Baum and Hans-Jörg Happel},
    title =     {{JMAP for Tasks}},
    pagetotal = 16,
    year =      2021,
    month =     jan,
    day =       29,
    abstract =  {This document specifies a data model for synchronizing task data with a server using JMAP.},
}