[Tex/LaTex] How to enter workingpaper in biblatex-chicago

Question

I could need some help figuring out how to properly enter and print working papers with biblatex-chicago?

I used to have entries like this (prior to switching to biblatex):

@workingpaper{silverstein1981limits-awareness,
    Address = {Austin},
    Author = {Silverstein, Michael},
    Language = {en},
    Number = {84},
    Publisher = {Southwest Educational Development Laboratory},
    Series = {Sociolinguistic Working Paper},
    Title = {The Limits of Awareness},
    Year = {1981}}

some also with an url field.

But biblatex doesn't include @workingpaper anymore. According to the manual one should use the @unpublished category. However if I change it to unpublished it only prints:

Silverstein, Michael. 1981. “The Limits of Awareness.” Austin.

which is not enough information if one wants to follow Chicago. CMoS recommends treating working papers like theses/dissertations or lectures/presentations. This is the example from their website which I'd like to replicate (adapted for author-date format):

Dyer, Lee, and Jeff Ericksen. 1980. "Complexity-Based Agile
Enterprises: Putting Self-Organizing Emergence to Work." CAHRS Working
Paper 08-01, School of Industrial and Labor Relations, Center for
Advanced Human Resource Studies, Cornell University, Ithaca, NY.
http://digitalcommons.ilr.cornell.edu/cahrswp/473.

Thus for my example above I'd like to end up with (for author date):

Silverstein, Michael. 1981. "The Limits of Awareness." Sociolinguistic
Working Paper 84, Southwest Educational Development Laboratory,
Austin.

How do I get @unpublished to print that additional information about publisher, series, and number? Or how should I modify my entry to get what I want?

Answer 1

I think you are looking for the @report entry type which is described as "A technical report, research report, or white paper published by a university or some other institution. [...] The sponsoring institution goes in the institution field." (p. 11 of the biblatex documentation).

The type or series of the report goes into the type field (with biblatex-chicago series would also be acceptable, but the standard styles only allow type here, so it seems to be a good idea to stick to type), the number of the report into number.

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage[english]{babel}
\usepackage[babel]{csquotes}
\usepackage[authordate, backend=biber]{biblatex-chicago}

\usepackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@report{silverstein1981limits-awareness,
  author      = {Silverstein, Michael},
  title       = {The Limits of Awareness},
  year        = {1981},
  type        = {Sociolinguistic Working Paper},
  number      = {84},
  institution = {Southwest Educational Development Laboratory},
  address     = {Austin},
}
\end{filecontents*}
\addbibresource{\jobname.bib}

\begin{document}
\cite{silverstein1981limits-awareness}

\printbibliography
\end{document}

gives